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5556 questions

Question 661Question

Although the national park employs two conservation agencies, each agencies' primary goal is to preserve it's designated wetlands.

Which of the following is the correct punctuation and spelling of the underlined portion of the sentence?

Show answer & explanation

Answer: agency's primary goal is to preserve its

Answer

The correct answer is the option that uses 'agency's' and 'its' because 'each' modifies a singular noun, and 'its' is the correct possessive pronoun.
The correct option correctly pairs the singular possessive noun 'agency's' with the singular determiner 'each,' and uses the possessive pronoun 'its' to denote ownership of the wetlands.

Step-by-Step Solution

1
Determine whether the noun modified by 'each' should be singular or plural.
Since 'each' is a singular modifier, it must modify a singular noun. The singular form of the noun is 'agency.'
Grammatical agreement requires singular determiners to pair with singular nouns.
2
Determine the correct possessive punctuation for the singular noun.
To show that the goal belongs to the singular agency, add an apostrophe and an 's' to form 'agency's.'
Singular nouns show possession by adding an apostrophe followed by 's.'
3
Choose the correct pronoun to refer to the wetlands belonging to the agency.
The possessive pronoun is 'its.' The contraction 'it's' (meaning 'it is') is incorrect in this context.
The sentence requires a possessive pronoun to show ownership of the designated wetlands.

Key Concept

Distinguishing between singular and plural possessive nouns, and distinguishing between the contraction 'it's' and the possessive pronoun 'its.'
Question 662Question

The following sentences are from a draft of an essay about Maya engineering. To ensure that the paragraph logically builds its claim that Maya engineering successfully addressed water scarcity, in what order should these sentences be placed?

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The logical order of the sentences is: the sentence establishing the general water scarcity problem, followed by the sentence introducing the reservoirs at Tikal, then the sentence detailing the canal connections to those basins, and concluding with the sentence stating the population supported by the system.
The paragraph begins with the general claim that Maya cities built far from rivers required sophisticated water management systems. It then provides the concrete example of the reservoirs at Tikal, which were lined with plaster. The next sentence builds on this detail by explaining how 'these plaster-lined basins' were filled using paved canals. Finally, the paragraph concludes with the result of this system—that it successfully supported tens of thousands of residents throughout the dry season.

Step-by-Step Solution

1
Identify the main claim or introductory statement of the paragraph.
The sentence stating that many ancient Maya cities were built far from natural rivers, forcing them to design sophisticated water systems, functions as the introductory claim.
Paragraphs typically begin with a broad claim or context before introducing specific examples and detailed evidence.
2
Locate the specific evidence that introduces the main example supporting the claim.
The sentence introducing the plaster-lined reservoirs at the city of Tikal provides the first concrete example of the water systems.
This sentence shifts the focus from a general claim about Maya cities to a specific, illustrative case study.
3
Use cohesive devices and pronoun references to connect the next detail to the example.
The sentence describing how 'these plaster-lined basins' were connected to paved canals must follow the introduction of the plaster-lined reservoirs.
The demonstrative phrase 'these plaster-lined basins' directly references the 'reservoirs... lined with plaster' mentioned in the previous sentence.
4
Identify the sentence that details the final outcome or result of the system.
The sentence starting with 'Consequently' describes the ultimate impact of the reservoirs (supporting tens of thousands of residents).
The transition word 'Consequently' signals a concluding result, which logically summarizes the effectiveness of the entire engineered system.

Key Concept

Supporting Claims with Evidence and Details
Estimated Time:1m 30s
Question 663Question

In 1943, Jacques Cousteau and Émile Gagnan co-invented a new breathing apparatus for underwater exploration. The Aqua-Lung , which allowed divers to breathe underwater, revolutionized marine research. Scientists could finally observe aquatic life for hours at a time.

Which choice best punctuates the underlined portion of the sentence?

Show answer & explanation

Answer: NO CHANGE

Answer

NO CHANGE
The relative clause starting with 'which' is nonessential because 'the Aqua-Lung' is a specific, named device. As a nonessential element in the middle of a sentence, it must be enclosed by a pair of commas. The original text correctly places a comma before 'which' and after 'underwater.'

Step-by-Step Solution

1
Determine if the underlined clause is essential or nonessential.
The clause 'which allowed divers to breathe underwater' provides extra information about 'the Aqua-Lung' but is not needed to identify what the device is. It is nonessential.
Nonessential information must be set off from the rest of the sentence with punctuation, while essential information should not be set off.
2
Choose the correct punctuation to set off the nonessential clause.
Since the clause appears in the middle of the sentence, it requires a pair of commas—one before and one after the clause.
Setting off a middle-of-the-sentence parenthetical element requires punctuation on both sides to prevent grammatical errors.
3
Evaluate the choices for comma placement and pronoun usage.
The option containing the original phrasing correctly uses a pair of commas. The option missing the second comma is incomplete. The option using 'that' with commas incorrectly punctuates a restrictive pronoun. The option using a semicolon creates a fragment.
Only the original punctuation maintains correct sentence structure.

Key Concept

Commas with Nonessential and Parenthetical Elements
Question 664Question

Read the sentence below. What single punctuation symbol should be placed in the blank to grammatically join the two independent clauses within a single sentence?

Fill in the blanks below

The modern library is no longer just a repository for printed books it has, furthermore, become a vital community hub offering digital literacy programs and public workspaces.
Show answer & explanation

Answer

A semicolon (;) is the correct punctuation mark to join the two independent clauses.
A semicolon is the correct choice because it is used to link two independent clauses that are closely related in thought when no coordinating conjunction (like 'and' or 'but') is present. In this sentence, both the clause preceding the blank and the clause succeeding the blank are independent clauses, so they must be separated by a semicolon.

Step-by-Step Solution

1
Analyze the grammatical structure of the clause before the blank.
The clause 'The modern library is no longer just a repository for printed books' contains a subject ('library') and a verb ('is') and expresses a complete thought, making it an independent clause.
Identifying whether a clause is dependent or independent is necessary to determine the appropriate punctuation for joining them.
2
Analyze the grammatical structure of the clause after the blank.
The clause 'it has, furthermore, become a vital community hub offering digital literacy programs and public workspaces' contains a subject ('it') and a verb ('has become') and expresses a complete thought, making it a second independent clause.
Two independent clauses cannot be joined by a comma alone (which creates a comma splice) or left with no punctuation (which creates a run-on sentence).
3
Select the correct punctuation mark to join the two independent clauses.
A semicolon (;) is the correct punctuation mark to join two independent clauses in a single sentence without a coordinating conjunction.
A semicolon acts as a separator between two closely related independent clauses, preventing both run-on sentences and comma splices.

Key Concept

Using semicolons to connect independent clauses
Question 665Question

The captain navigated the vessel through the unpredictable, turbulent, currents of the channel, the crew struggled to secure the heavy cargo before the storm hit.

Which choice best punctuates the underlined portion of the sentence?

Show answer & explanation

Answer: unpredictable, turbulent currents of the channel; the crew struggled

Answer

The correct option is the one that uses a comma between the coordinate adjectives 'unpredictable' and 'turbulent', omits any punctuation between the adjective 'turbulent' and the noun 'currents', and separates the two independent clauses with a semicolon.
The correct answer correctly separates the coordinate adjectives 'unpredictable' and 'turbulent' with a comma, avoids placing a comma between the final adjective and the noun 'currents', and uses a semicolon to properly link the two independent clauses.

Step-by-Step Solution

1
Determine if a comma is needed between the adjectives 'unpredictable' and 'turbulent'.
The adjectives are coordinate because they can be reversed ('turbulent, unpredictable currents') and can be connected by 'and' ('unpredictable and turbulent currents'). Therefore, they must be separated by a comma.
Coordinate adjectives modify a noun in parallel and require a comma between them.
2
Verify the punctuation between the final adjective 'turbulent' and the noun 'currents'.
No comma should be placed between 'turbulent' and 'currents'.
A comma should never separate the last adjective in a series from the noun it modifies.
3
Identify the clause boundary and the correct punctuation to join the clauses.
The sentence consists of two independent clauses: 'The captain navigated the vessel through the currents' and 'the crew struggled to secure the cargo'. They must be joined by a semicolon or a coordinating conjunction.
Joining two independent clauses with only a comma results in a comma splice, and using a semicolon followed by 'because' creates a dependent clause fragment.

Key Concept

Coordinate Adjectives and Clause Separation
Question 666Question

Though modern surveyors once dismissed the Great Dismal Swamp as a stagnant wasteland, early nineteenth-century communities viewed the dense morass as a vital, albeit challenging, sanctuary. Fleeing from nearby plantations, many enslaved people established permanent, self-sufficient settlements deep within the swamp's interior. [1]

The writer wants to add a sentence at Point [1] that contrasts the swamp's role as a refuge for self-determination with the hostile, dehumanizing conditions of the plantations they left behind. Which choice most effectively accomplishes this rhetorical goal?

Show answer & explanation

Answer: Within the thick canopy, they traded the brutal, ceaseless labor of the cotton fields for a difficult but self-directed life of farming and foraging.

Answer

The correct answer is the option that describes the settlers trading the brutal, ceaseless labor of the cotton fields for a difficult but self-directed life of farming and foraging.
The correct choice is the option that mentions trading the brutal labor of the cotton fields for a self-directed life. This choice directly fulfills the rhetorical goal by contrasting the dehumanizing plantation labor with the autonomous, self-determined lifestyle of farming and foraging established in the swamp.

Step-by-Step Solution

1
Analyze the prompt to identify the specific rhetorical goals required: a contrast between the swamp's role as a refuge for self-determination and the hostile, dehumanizing conditions of the plantations.
The target sentence must contain elements representing both 'refuge/self-determination' and 'hostile plantation conditions' in a contrasting relationship.
Understanding the precise criteria of the rhetorical goal is necessary to evaluate the options.
2
Evaluate each option for grammatical correctness.
The option beginning with 'These hidden communities thrived...' is eliminated because it contains a comma splice, joining two independent clauses with only a comma. The other options are grammatically correct.
ACT English questions require the correct choice to be grammatically flawless.
3
Assess the remaining grammatically correct options against the rhetorical goals.
The option beginning with 'Within the thick canopy...' successfully contrasts 'brutal, ceaseless labor of the cotton fields' (hostile plantation conditions) with a 'difficult but self-directed life' (refuge/self-determination). The other options focus on physical swamp hazards or trade relationships without referencing the plantations.
Matching the specific rhetorical goals is the final step to identify the correct answer.

Key Concept

Meeting Specific Rhetorical Goals
Question 667Question

In the sentence below, a portion is underlined:

A standard violin consists of dozens of wood pieces, and the quality of each instrument's soundboard has it's own profound effect on the overall tone.

Which of the following is the correct spelling and punctuation of the underlined portion?

Show answer & explanation

Answer: instrument's soundboard has its

Answer

The correct option is the one that uses the singular possessive 'instrument's' and the possessive adjective 'its'.
The correct choice uses the singular possessive form 'instrument's' because it is preceded by the singular determiner 'each'. It also uses the possessive pronoun 'its' to modify 'own profound effect', avoiding the contraction 'it's' (it is/has).

Step-by-Step Solution

1
Determine if the noun 'instrument' should be singular or plural possessive.
The word 'each' modifies a singular noun. Therefore, the singular possessive form 'instrument's' is correct.
We are referring to one instrument at a time, so we need the singular possessive form, not the plural possessive 'instruments'.
2
Determine whether the contraction 'it's' or the possessive adjective 'its' is appropriate in this context.
The sentence requires a possessive adjective to modify 'own profound effect'. Therefore, 'its' is correct.
'it's' is a contraction for 'it is' or 'it has', which does not make sense in 'has it is own profound effect'.

Key Concept

Distinguishing between singular and plural possessives, and between possessive pronouns and contractions.
Question 668Question

Every pupils' desk was polished until it's surface shined.

Which choice is the correct spelling and punctuation of the underlined portion of the sentence?

Show answer & explanation

Answer: pupil's desk was polished until its

Answer

pupil's desk was polished until its
The correct choice uses the singular possessive 'pupil's' because the determiner 'Every' modifies a singular noun. It also correctly uses the possessive pronoun 'its' to modify 'surface' because the sentence refers to the surface of the desk, not 'it is surface'.

Step-by-Step Solution

1
Determine the singular or plural possessive requirement for the subject.
The distributive determiner 'Every' requires a singular noun. Therefore, the singular possessive form 'pupil's' is correct.
To maintain proper subject-modifier agreement.
2
Determine whether to use a contraction or a possessive pronoun.
The sentence indicates that the surface belongs to the desk. The possessive pronoun 'its' must be used, rather than the contraction 'it's' (it is).
To show possession without introducing an illogical verb phrase.

Key Concept

Apostrophes for possessives and contractions
Question 669Question

Strumming My Way

[1]
Last summer, I decided to learn a new musical instrument. Walking into the local music shop, my eyes immediately bypassed the massive guitars and glossy pianos, landing instead on a small, four-stringed instrument: the ukulele. Its compact size and bright, cheerful color felt welcoming. I bought it on the spot.

[2]
Learning the basic chords was surprisingly easy. Within three days, I could play a simple version of my favorite folk song. The nylon strings were gentle on my fingers, unlike the harsh steel strings of my older brother's acoustic guitar. I practiced on our back porch every evening, enjoying the warm breeze.

[3]
By the end of the summer, I was confident enough to perform a short song at a family barbecue. While my playing was not perfect, the cheerful strums brought smiles to my relatives' faces. This small instrument had opened up a whole new world of musical joy for me, proving that you don't need a massive instrument to make a big impact.

Suppose the writer's goal had been to write an essay that describes the historical origins and development of the ukulele as a traditional Hawaiian instrument. Would this essay accomplish that goal?

Show answer & explanation

Answer: No, because the essay focuses on a personal narrative about the writer's experience purchasing and learning the instrument.

Answer

No, because the essay focuses on a personal narrative about the writer's experience purchasing and learning the instrument.
The correct answer is the option stating that the essay does not achieve the goal because it focuses on a personal narrative about the writer's experience purchasing and learning the instrument. The essay describes a personal journey of buying a ukulele and practicing it, containing no historical information about the instrument's origins or its development in Hawaii.

Step-by-Step Solution

1
Analyze the writer's proposed goal.
The goal is to write an essay describing the historical origins and development of the ukulele as a traditional Hawaiian instrument.
This establishes the criteria for evaluating the essay's success.
2
Examine the content of the provided passage.
The passage is a first-person narrative about buying a ukulele, learning basic chords, and playing it at a family gathering. It contains no historical facts, dates, or details about Hawaii or the instrument's origins.
We must compare the actual content to the stated goal to see if they align.
3
Determine if the goal was met and choose the correct option.
The goal was not met ('No') because the passage is a personal narrative, which matches the option explaining that the essay focuses on the writer's personal experience purchasing and learning the instrument.
This completes the evaluation and identifies the correct response.

Key Concept

Evaluating whether an essay fulfills a specific rhetorical goal by comparing the stated goal with the actual content and main focus of the text.
Question 670Question

[1]
In the early nineteenth century, navigating the coastal waters of Europe and North America at night was a perilous endeavor. Existing lighthouses relied on crude metal reflectors and thick glass lenses that absorbed most of the light, casting weak, scattered beams that were barely visible a few miles out. Mariners frequently ran aground because they could not see the warning beacons until it was too late.

[2]
The solution came in 1821 from French physicist Augustin-Jean Fresnel, who designed a revolutionary lens system. Instead of using a single thick, heavy piece of glass, Fresnel assembled a series of concentric glass rings shaped like prisms. These rings bent the light from a central lamp and concentrated it into a single, intense parallel beam. This design allowed the light to travel over twenty miles across the ocean surface, significantly increasing the visibility of the lighthouses.

[3]
Fresnel's invention transformed maritime safety worldwide. Within decades, his lenses were installed in lighthouses across the globe, dramatically reducing the number of shipwrecks and saving countless lives. Even today, despite the advent of modern satellite navigation and radar, many historic lighthouses still employ Fresnel's ingenious design, demonstrating the enduring legacy of his scientific achievement.

Suppose the writer's goal had been to write an essay that describes how a specific scientific innovation directly addressed a historical challenge in transportation safety. Would this essay fulfill that goal?

Show answer & explanation

Answer: Yes, because it explains how Fresnel's prism-based lens system solved the problem of weak lighthouse beams, thereby reducing shipwrecks.

Answer

Yes, because it explains how Fresnel's prism-based lens system solved the problem of weak lighthouse beams, thereby reducing shipwrecks.
The correct option correctly states that the essay fulfills the goal because the text details Augustin-Jean Fresnel's prism-based lens design and explains how it addressed the safety issue of ships running aground by significantly expanding the range of lighthouse beams.

Step-by-Step Solution

1
Identify the proposed writing goal, which is to describe how a scientific innovation addressed a transportation safety challenge.
The goal requires finding a scientific innovation and a safety challenge it solved.
Understanding the prompt's criteria is necessary to evaluate the passage.
2
Analyze the passage to locate a safety challenge and a corresponding scientific innovation.
The text identifies a nineteenth-century challenge (mariners running aground due to poor lighthouse visibility) and a scientific innovation (Fresnel's concentric prism-lens system).
This confirms both components of the writing goal are present in the text.
3
Evaluate whether the innovation resolved the challenge.
The passage explicitly states that the lens allowed light to travel over twenty miles, dramatically reducing shipwrecks and saving lives.
This establishes that the innovation directly addressed the stated safety challenge.
4
Select the option that correctly answers 'Yes' and cites this relationship as the supporting reason.
The option stating that Fresnel's prism-based lens system solved the problem of weak lighthouse beams and reduced shipwrecks is selected.
It aligns with the text's facts and accurately addresses the essay-wide writing goal.

Key Concept

Evaluating Whole-Essay Goals and Purpose
Estimated Time:1m 30s
Question 671Question

Identify the single punctuation mark that should replace the blank to correctly join the two independent clauses in the sentence below.

Fill in the blanks below

Geothermal power plants harness the Earth's internal heat to generate clean electricity nevertheless, their installation requires significant upfront capital investment.
Show answer & explanation

Answer

A semicolon (;) is the correct punctuation mark.
A semicolon (;) is the correct punctuation mark because it connects two closely related independent clauses joined by the conjunctive adverb 'nevertheless'. Since 'nevertheless' starts with a lowercase letter, a period is grammatically incorrect, and a comma would create a comma splice.

Step-by-Step Solution

1
Analyze the structure of the clauses surrounding the blank.
The clause before the blank ('Geothermal power plants harness the Earth's internal heat to generate clean electricity') and the clause after the blank ('nevertheless, their installation requires significant upfront capital investment') are both independent clauses.
Understanding clause boundaries is essential for choosing the correct punctuation.
2
Identify the transition word.
The word 'nevertheless' is a conjunctive adverb.
Conjunctive adverbs require a semicolon (or a period and capitalization) when linking two independent clauses.
3
Select the correct punctuation mark.
A semicolon must be used. Since 'nevertheless' is lowercase, a period cannot be used. A comma would result in a comma splice.
A semicolon successfully connects independent clauses joined by transitional adverbs without creating a run-on sentence or a comma splice.

Key Concept

Semicolons with conjunctive adverbs
Question 672Question

Although the superb lyrebird is best known for its ability to mimic human sounds like chainsaws and car alarms, its natural song is equally complex. The male bird sings for hours during the breeding season to attract a mate, however, the female bird remains relatively quiet, focusing her energy on building a nest.

Which of the following choices best punctuates the underlined portion of the sentence?

Show answer & explanation

Answer: mate; however, the

Answer

The correct option is the one that punctuates the transition with a semicolon before 'however' and a comma after it.
The correct option properly separates two independent clauses using a semicolon before the conjunctive adverb 'however' and a comma immediately following it.

Step-by-Step Solution

1
Identify the two clauses surrounding the underlined portion.
Clause 1 ('The male bird sings for hours during the breeding season to attract a mate') and Clause 2 ('the female bird remains relatively quiet, focusing her energy on building a nest') are both independent clauses.
Determining whether the clauses are independent or dependent dictates the punctuation needed to join them.
2
Evaluate the transition word 'however' connecting these clauses.
'However' is a conjunctive adverb used to transition between two independent clauses.
Conjunctive adverbs require a semicolon before them and a comma after them when linking two independent clauses.
3
Select the punctuation choice that correctly applies these rules.
The choice using a semicolon before 'however' and a comma after it is correct, while avoiding comma splices and fragment errors.
This is the only grammatically correct way to join these two independent clauses without creating a comma splice or run-on sentence.

Key Concept

Semicolons are used to link two independent clauses, especially when joined by a conjunctive adverb like 'however'.
Estimated Time:1m 0s
Question 673Question

In the sentence below, a portion is underlined:

Although both archeological teams analyzed the same tomb, each team's researchers questioned it's dating and authenticity.

Which of the following options represents the correct punctuation and spelling for the underlined portion of the sentence?

Show answer & explanation

Answer: team's researchers questioned its

Answer

team's researchers questioned its
The correct option correctly uses the singular possessive noun 'team's' to agree with the singular modifier 'each' and the possessive pronoun 'its' to indicate ownership of the dating of the tomb.

Step-by-Step Solution

1
Analyze the subject of the clause to determine the correct noun possession form.
The word 'each' requires a singular noun, so the possessive form must be singular ('team's') rather than plural ('teams'').
This establishes that the researchers belong to each individual team.
2
Determine the correct form of the pronoun referring to the tomb's dating.
The possessive pronoun 'its' (no apostrophe) is required to show possession of 'dating'.
The contraction 'it's' means 'it is' or 'it has' and is grammatically incorrect in this context.
3
Combine the singular possessive noun and the correct possessive pronoun.
The correct phrasing is 'team's researchers questioned its'.
This resolves both the punctuation error of the noun possessive and the homophone confusion of the pronoun.

Key Concept

Apostrophes for Possessives and Contractions
Question 674Question

The following passage is an excerpt from a biography of a famous scientist.

In 1962, biologist Rachel Carson published *Silent Spring*, a landmark book that warned of the dangers of chemical pesticides. The book, which initially faced fierce opposition from chemical companies, eventually inspired a nationwide ban on DDT. Her eloquent writing style helped launch the modern environmental movement.

Which of the following is the best choice for the underlined portion of the sentence?

Show answer & explanation

Answer: NO CHANGE

Answer

The correct option is the one that sets off the nonessential relative clause with a pair of commas, written as: 'book, which initially faced fierce opposition from chemical companies,'
The clause 'which initially faced fierce opposition from chemical companies' is nonessential (nonrestrictive) because the book has already been specifically identified as Rachel Carson's *Silent Spring*. Nonessential elements must be set off from the rest of the sentence with a pair of commas. The phrase 'book, which initially faced fierce opposition from chemical companies,' correctly places a comma before and after the nonessential clause.

Step-by-Step Solution

1
Identify the clause following the word 'book' as essential (restrictive) or nonessential (nonrestrictive).
The clause 'which initially faced fierce opposition from chemical companies' is nonessential because the specific book (*Silent Spring*) has already been named, so the clause merely adds extra information rather than identifying the book.
Determining whether a clause is essential or nonessential dictates the punctuation rules that must be applied.
2
Apply the correct punctuation rule for nonessential clauses.
Nonessential clauses must be set off from the rest of the sentence by a pair of commas (one before 'which' and one at the end of the clause after 'companies').
A parenthetical or nonessential element must be fully set off with matching punctuation on both sides to maintain sentence structure.
3
Evaluate the choices to find the one that correctly applies a pair of commas without introducing other punctuation errors.
The original phrasing 'book, which initially faced fierce opposition from chemical companies,' correctly uses a comma pair. Other options either omit the second comma, use a semicolon inappropriately, or incorrectly place commas around a 'that' clause.
This confirms that the original sentence requires no changes.

Key Concept

Nonessential elements (appositives, parenthetical adverbs, and nonrestrictive relative clauses) must be set off from the rest of the sentence by commas on both sides.
Question 675Question

The Sweet Accident of 1904

During the hot summer of 1904, the St. Louis World's Fair was in full swing, attracting millions of visitors. Among the vendors was Arnold Fornachou, an ice cream seller who was doing a brisk business. The demand for his ice cream was so high that he quickly ran out of clean paper dishes to serve his customers. Without any way to hold the ice cream, his business threatened to grind to a halt.

Directly next to Fornachou's booth was Ernest Hamwi, a Syrian immigrant who was selling zalabia, a waffle-like pastry. Seeing his neighbor's predicament, Hamwi quickly rolled one of his warm, thin waffles into the shape of a cone. He let it cool for a moment so it would harden, and then handed it to Fornachou. Fornachou placed a scoop of ice cream on top of the waffle cone, and the customers loved it.

This spontaneous collaboration marked the birth of the modern ice cream cone. The combination of the cold ice cream and the crispy, edible container solved the vendor's immediate container shortage while creating a lasting culinary sensation. Soon, other vendors at the fair began adopting the idea, cementing the cone's place in popular culture.

Determine whether the following statement is true or false:

Suppose the writer's goal had been to write an essay that describes how a practical problem at the 1904 World's Fair led to the creation of the modern ice cream cone. This goal was successfully met by the essay.

Show answer & explanation

Answer: True

Answer

True
The correct answer is True because the passage successfully details a practical problem (the ice cream vendor running out of paper dishes) and explains how this led directly to the creation of the modern ice cream cone (the neighboring vendor rolling a waffle into a cone shape to hold the ice cream).

Step-by-Step Solution

1
Read the entire passage to identify the main topic and supporting details.
The passage discusses how a dish shortage at the 1904 St. Louis World's Fair led to a waffle vendor rolling a waffle into a cone to hold ice cream, which became the modern ice cream cone.
To evaluate whether a whole-essay goal is met, we must first understand the overall content and purpose of the passage.
2
Analyze the hypothetical goal: describing how a practical problem led to the creation of the modern ice cream cone.
The practical problem (running out of dishes) and the creation of the cone are the central focus of the narrative.
This allows us to compare the writer's hypothetical goal with the actual content of the essay.
3
Determine if the essay successfully achieves this goal.
The statement is true.
Since the essay successfully details the problem and the resulting invention, the statement asserting the goal was met is correct.

Key Concept

Evaluating Whole-Essay Goals and Purpose
Estimated Time:1m 0s
Question 676Question

A single whale fall can support a complex ecological community for decades, in fact, researchers have identified distinct successional stages that host specialized species found nowhere else on the ocean floor.

Which choice best punctuates the underlined portion of the sentence?

Show answer & explanation

Answer: decades; in fact, researchers

Answer

decades; in fact, researchers
The correct option correctly uses a semicolon to separate two closely related independent clauses. The transitional phrase 'in fact' is correctly followed by a comma.

Step-by-Step Solution

1
Analyze the clauses on either side of the underline to determine if they are independent or dependent.
The first clause ('A single whale fall can support a complex ecological community for decades') is independent. The second clause ('in fact, researchers have identified distinct successional stages...') is also independent, containing both a subject ('researchers') and a verb ('have identified') to express a complete thought.
Correct punctuation depends on the structural relationship between the connected clauses.
2
Evaluate how transitional adverbs connect independent clauses.
Transitional adverbs like 'in fact' cannot connect independent clauses with only a comma, as this creates a comma splice. They must be preceded by a semicolon (or period) and followed by a comma.
A semicolon is needed to avoid a comma splice while maintaining the logical flow between the two closely related sentences.
3
Check the other options to ensure no fragments or incorrect dependent clauses are created.
Adding 'since' or 'which' introduces a subordinating element, turning the second clause into a dependent clause. Separating it with a semicolon then results in a fragment error.
Semicolons can only connect two independent clauses; they cannot connect an independent clause to a dependent clause.

Key Concept

Using a semicolon to link two independent clauses, particularly when the second clause begins with a transitional adverb or phrase.
Estimated Time:1m 0s
Question 677Question

Read the passage below. What is the single punctuation mark that must fill the blank to correctly end the first sentence?

Fill in the blanks below

The chief engineer asked whether the new geothermal plant would be operational by the start of the winter season They wanted to ensure that the local grid could handle the increased demand without relying on fossil fuels.
Show answer & explanation

Answer

A period (.) is the correct punctuation mark to end the first sentence.
The correct punctuation is a period. The first sentence is a declarative statement containing an indirect question ('asked whether...'). Since it is not a direct question, a period is required to end the sentence, especially since the following word 'They' is capitalized and begins a new independent clause.

Step-by-Step Solution

1
Analyze the structure of the clause preceding the blank.
The clause 'The chief engineer asked whether the new geothermal plant would be operational by the start of the winter season' is an independent clause containing an indirect question ('whether...').
Identifying the clause structure determines if it can stand alone as a sentence and what punctuation it requires.
2
Determine if the clause is a direct question or a declarative statement.
Because it reports a question rather than asking one directly, it is a declarative statement (an indirect question) and does not take a question mark.
Indirect questions are grammatically declarative and must end with a period.
3
Identify the boundary before the next capitalized word.
The word 'They' is capitalized, indicating the start of a new independent sentence. Therefore, a terminal end-of-sentence punctuation mark is required to separate the two complete sentences.
Proper end-of-sentence punctuation prevents run-on sentences and comma splices.

Key Concept

Indirect questions are declarative sentences and must end with a period rather than a question mark.
Estimated Time:1m 0s
Question 678Question

Given the following passage:

In 1925, at the age of fifty-five, Ynes Mexia embarked on her first botanical collecting expedition to Mexico. Over the next thirteen years, she traveled across North and South America, brave enough to confront harsh environments in search of rare plants. Her efforts resulted in the collection of nearly 150,000 plant specimens, including hundreds of new species. In particular, her discovery of a new genus of sunflower, *Mexianthus*, solidified her legacy in the scientific community.

The writer wants to revise the underlined portion ("brave enough to confront harsh environments") to provide the most specific, concrete details that support the claim that Mexia traveled through challenging and remote terrain. Which choice best accomplishes this goal?

Show answer & explanation

Answer: riding on horseback through the rugged Sierra Madre mountains and canoeing down the Amazon River

Answer

The phrase that describes riding on horseback through the rugged Sierra Madre mountains and canoeing down the Amazon River is the correct choice because it provides the most specific, concrete visual details of the challenging terrain Mexia braved.
The correct choice provides specific, concrete geographical details ('Sierra Madre mountains', 'Amazon River') and actions ('riding on horseback', 'canoeing') that vividly illustrate the challenging and remote terrain Mexia traversed.

Step-by-Step Solution

1
Identify the claim that needs to be supported in the sentence.
The claim is that Mexia traveled through challenging and remote physical environments.
This ensures the selected details directly align with the writing goal.
2
Evaluate the options to find the one that provides the most specific and concrete visual details of terrain and travel methods.
The option mentioning riding on horseback through the Sierra Madre mountains and canoeing down the Amazon River provides highly specific geographical details and modes of transport.
Concrete details make the description vivid and persuasive compared to generalized statements.
3
Verify that the chosen option is grammatically correct and fits the context.
The chosen phrase integrates smoothly and has no grammatical errors.
ACT English requires both rhetorical effectiveness and grammatical correctness.

Key Concept

Supporting Claims with Evidence and Details
Estimated Time:1m 0s
Question 679Question

Although a honeybee colony contains thousands of workers, the hives' single queen spends it's life laying eggs to sustain the population.

Which of the following is the correct spelling and punctuation for the underlined portion of the sentence?

Show answer & explanation

Answer: hive's single queen spends its

Answer

hive's single queen spends its
The correct answer uses the singular possessive noun to show ownership of a single hive's queen, and the possessive pronoun to refer to the queen's life.

Step-by-Step Solution

1
Analyze the context to determine whether the noun showing ownership is singular or plural.
The sentence begins with the phrase 'a honeybee colony,' indicating a single colony and therefore a single hive. Thus, the singular possessive form is needed.
This distinguishes between the singular possessive and the plural possessive form of the noun.
2
Determine if the pronoun preceding 'life' requires an apostrophe.
The sentence requires a possessive pronoun to indicate ownership of the queen's life. The spelling without an apostrophe indicates possession, whereas the spelling with an apostrophe is a contraction meaning 'it is'.
This resolves the homophone confusion between contractions and possessive pronouns.
3
Combine the correct choices to identify the appropriate phrasing.
Combining the singular possessive noun and the possessive pronoun yields the correct phrasing.
This matches the grammatically correct elements to the corresponding option.

Key Concept

Distinguishing between singular and plural possessive nouns, and between possessive pronouns and contractions.
Question 680Question

Although the museum curator initially cataloged the painting as a minor work from the Dutch Golden Age, subsequent chemical analysis of the pigments revealed a startling truth, the masterpiece was painted by Rembrandt himself.

Which choice best punctuates the underlined portion of the passage?

Show answer & explanation

Answer: truth: the masterpiece was

Answer

truth: the masterpiece was
The correct choice uses a colon to separate two independent clauses. The clause preceding the colon is a complete sentence, and the subsequent clause directly explains the 'startling truth' introduced in the first clause. This aligns perfectly with the standard rules for colon usage.

Step-by-Step Solution

1
Analyze the clause structure preceding the underlined portion.
The segment starting from 'Although...' and ending with 'truth' consists of an introductory dependent clause followed by a main independent clause, which can stand alone as a complete sentence.
This establishes that the preceding text is grammatically capable of supporting a colon.
2
Analyze the grammatical structure of the clause following the underlined portion.
'the masterpiece was painted by Rembrandt himself' contains a subject and a verb, expressing a complete thought that can stand alone as an independent clause.
This determines the relationship between the two clauses and the appropriate punctuation needed to link them.
3
Determine the correct punctuation to join these two clauses.
A colon is the correct punctuation mark here because it separates two independent clauses where the second clause explains or amplifies the first.
This allows for the elimination of options that introduce comma splices, fragments, or incomplete clauses before the colon.

Key Concept

A colon must be preceded by an independent clause (a complete thought) and can be used to join two independent clauses when the second clause directly explains, illustrates, or amplifies the first.
Estimated Time:1m 0s
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