Examkin

Conventions of Punctuation

374 questions

All types374Multiple choice326Fill in the blank48
Question 141Question →

Many local community gardens have started implementing rainwater harvesting systems to conserve water. These systems collect rain that runs off roofs and store it in large barrels. Which can then be used to water the plants during dry spells. This practice helps reduce municipal water usage significantly.

Which of the following options best corrects the underlined portion of the passage?

Show answer & explanation

Answer: barrels, which

Answer

barrels, which
The correct option correctly uses a comma to subordinate the relative clause beginning with 'which' to the main clause. This avoids a fragment and ensures a grammatically sound sentence.

Step-by-Step Solution

1
Analyze the underlined portion and the clause that follows it to determine if it is independent or dependent.
The clause 'Which can then be used...' begins with a relative pronoun and lacks a complete thought, making it dependent.
Correct end-of-sentence punctuation depends on whether the clauses on both sides can stand alone as complete sentences.
2
Evaluate the current punctuation and options to see which choice avoids creating a sentence fragment or a comma splice.
Using a period or a semicolon creates a fragment because the second clause is dependent. Replacing 'which' with 'this' creates a comma splice.
Dependent relative clauses must be joined to their independent clause using a comma rather than terminal punctuation or coordination that creates a comma splice.
3
Select the option that joins the clauses correctly.
The phrase 'barrels, which' correctly subordinates the relative clause and connects it to the main clause.
This establishes proper sentence boundaries and makes the passage grammatically correct.

Key Concept

Identifying sentence boundaries and ensuring that dependent relative clauses are connected to independent clauses without creating sentence fragments.
Estimated Time:45s
Question 142Question →

While the school's teachers prepared for the upcoming semester, the administrators' chief goal was it's successful launch.

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

Show answer & explanation

Answer: administrators' chief goal was its

Answer

administrators' chief goal was its
The correct option correctly uses the plural possessive "administrators'" to show that the goal belongs to the collective group of administrators, and the possessive pronoun "its" to modify the noun phrase "successful launch."

Step-by-Step Solution

1
Determine if the noun "administrators" should be singular or plural, and how to make it possessive.
The context refers to the school's collective staff in the plural (indicated by "teachers"), so "administrators" should be plural. To show possession of "chief goal," the plural possessive form "administrators'" must be used.
Plural nouns ending in -s show possession by placing an apostrophe after the final -s.
2
Determine whether to use a contraction or a possessive pronoun before "successful launch."
The sentence requires the possessive pronoun "its" to show that the launch belongs to the semester. Using "it's" (it is) would create a grammatical error.
Possessive pronouns (such as its, their, and whose) do not use apostrophes, while contractions (such as it's, they're, and who's) do.
3
Combine the correct forms to identify the correct option.
The correct phrase is "administrators' chief goal was its".
This option correctly applies the rules of plural possession and possessive pronouns.

Key Concept

Apostrophes for Plural Possessives and Possessive Pronouns vs. Contractions
Estimated Time:1m 0s
Question 143Question →

The document <u>that contains the signature, which was drafted in 17761776,</u> is preserved in the national archives. It is displayed under protective glass to prevent fading.

Which choice is the correct punctuation for the underlined portion of the sentence?

Show answer & explanation

Answer: NO CHANGE

Answer

The correct option is 'NO CHANGE', which leaves the restrictive clause without commas and encloses the nonessential parenthetical clause in a pair of commas.
The correct option maintains the sentence's structure by keeping the restrictive clause 'that contains the signature' without commas, while properly enclosing the nonessential parenthetical clause 'which was drafted in 17761776' with a pair of commas.

Step-by-Step Solution

1
Identify the restrictive clause 'that contains the signature' and the nonessential clause 'which was drafted in 17761776'.
The clause 'that contains the signature' specifies which document and is restrictive. The clause 'which was drafted in 17761776' adds extra information and is nonessential.
This determines which parts of the sentence require commas and which do not.
2
Apply the punctuation rules for restrictive and nonessential clauses.
Keep the restrictive clause without commas and enclose the nonessential clause in a pair of commas.
A pair of commas is necessary to correctly set off nonessential information from the main sentence structure.

Key Concept

Distinguishing between restrictive and nonessential clauses to apply commas correctly.
Question 144Question →

During his expedition to the Antarctic, the explorer packed only the absolute essentials: a thermal tent, a sleeping bag, and a portable stove.

Which of the following options correctly punctuates the underlined portion of the sentence?

Show answer & explanation

Answer: essentials: a thermal

Answer

essentials: a thermal
The correct option uses a colon to separate a complete sentence (independent clause) from a list that describes the essentials. This matches the standard rules of colon usage.

Step-by-Step Solution

1
Identify the clause preceding the punctuation mark.
The preceding clause is 'During his expedition to the Antarctic, the explorer packed only the absolute essentials'.
This clause contains a subject and a verb and expresses a complete thought, meaning it is an independent clause.
2
Determine the grammatical role of the text following the punctuation mark.
The text 'a thermal tent, a sleeping bag, and a portable stove' is a list of items describing the essentials.
Since the preceding clause is independent and is followed by a list, a colon is the correct punctuation to introduce it.

Key Concept

A colon must be preceded by an independent clause (a complete sentence) when used to introduce a list, explanation, or elaboration.
Estimated Time:45s
Question 145Question →

Before beginning the pottery class, the instructor listed the required materials, including: clay, a sponge, and a wire tool.

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

Show answer & explanation

Answer: materials: clay

Answer

The option that replaces the underlined portion with 'materials: clay' is correct, as it properly introduces a list after an independent clause.
The correct choice replaces the error in the original sentence by placing a colon directly after the word 'materials'. This is correct because the preceding clause 'Before beginning the pottery class, the instructor listed the required materials' is independent, and the colon properly introduces the subsequent list.

Step-by-Step Solution

1
Analyze the original sentence structure to identify any errors.
The original text features a colon after 'including', which is incorrect because a colon should not separate a preposition or participle from its objects.
This shows that the original phrasing needs correction.
2
Determine if the clause preceding the list is independent in the alternative phrasings.
The clause 'Before beginning the pottery class, the instructor listed the required materials' can stand alone as a complete sentence.
A colon must always be preceded by a complete independent clause.
3
Select the correct punctuation to connect the independent clause and the list.
A colon placed after 'materials' is the correct punctuation to introduce the list of items ('clay, a sponge, and a wire tool').
This rules out semicolons (which require two independent clauses) and commas (which are insufficient to introduce a list in this context).

Key Concept

Colons must be preceded by an independent clause and can be used to introduce lists, explanations, or quotes.
Question 146Question →

During the Islamic Golden Age, scholars made significant strides in understanding the behavior of light. The physicist Ibn al-Haytham , who is often considered the father of modern optics, revolutionized scientific methodology through his rigorous experiments. In his influential work *Book of Optics*, he demonstrated that light travels in straight lines and enters the eye to produce vision.

Which choice best punctuates the underlined portion of the sentence?

Show answer & explanation

Answer: NO CHANGE

Answer

The correct answer is the option that keeps the original punctuation (NO CHANGE). The clause 'who is often considered the father of modern optics' is a nonessential relative clause because the subject 'Ibn al-Haytham' is a proper noun and already specifically identified. Therefore, the clause must be set off with a pair of commas. Keeping the comma before 'who' and after 'optics' correctly punctuates the sentence.
The clause starting with 'who' is nonessential because the subject 'Ibn al-Haytham' is a proper noun and is already fully identified. Therefore, this parenthetical information must be enclosed by a pair of commas. The original text correctly places a comma before 'who' and a comma after 'optics' before the main verb 'revolutionized'.

Step-by-Step Solution

1
Identify the grammatical role of the underlined clause.
The clause starting with 'who' is a relative clause modifying the proper noun 'Ibn al-Haytham'.
Determining whether a clause is essential (restrictive) or nonessential (nonrestrictive) dictates how it must be punctuated.
2
Determine whether the clause is essential or nonessential.
Because the subject 'Ibn al-Haytham' is already a specifically named individual, the relative clause is nonessential information that could be removed without changing the core meaning of the sentence.
Nonessential elements must be set off from the rest of the sentence by a matching pair of punctuation marks, such as commas.
3
Evaluate the choices to find the correct punctuation structure.
A pair of commas must enclose the clause. The comma before 'who' and the comma after 'optics' correctly isolate the nonessential element.
Omitting one comma, using a semicolon, or using a restrictive pronoun with commas would violate standard punctuation and usage rules.

Key Concept

Commas with Nonessential and Parenthetical Elements
Question 147Question →

In his landmark studies of memory, psychologist Hermann Ebbinghaus identified a critical phenomenon: the forgetting curve demonstrates that information is lost rapidly after learning unless it is actively reviewed.

Which of the following is the most appropriate edit to the underlined portion?

Show answer & explanation

Answer: NO CHANGE

Answer

The correct option is the one that leaves the sentence unchanged, using a colon after 'phenomenon' and before 'the forgetting'.
The original punctuation is correct. The colon is preceded by a complete, independent clause ('In his landmark studies of memory, psychologist Hermann Ebbinghaus identified a critical phenomenon') and is followed by an independent clause that explains the phenomenon. This aligns with ACT standards for colon usage.

Step-by-Step Solution

1
Analyze the clause preceding the punctuation mark.
The clause 'In his landmark studies of memory, psychologist Hermann Ebbinghaus identified a critical phenomenon' is an independent clause because it contains a subject and a verb and can stand alone as a complete sentence.
According to grammar rules, a colon must always be preceded by an independent clause.
2
Analyze the clause or phrase following the punctuation mark.
The clause 'the forgetting curve demonstrates that information is lost rapidly after learning unless it is actively reviewed' is also an independent clause that directly explains and amplifies the 'phenomenon' mentioned in the first clause.
A colon is appropriate for joining two independent clauses when the second clause explains or illustrates the first.
3
Evaluate the incorrect options to identify errors.
The options using 'which is:', 'defined by:', and 'because:' all place the colon immediately after a verb, a preposition, or a subordinating conjunction, which violates the rule that the colon must follow a complete, independent clause.
Placing a colon after a verb, preposition, or subordinating conjunction results in an incomplete sentence preceding the colon.

Key Concept

Colons must be preceded by an independent clause and should not be placed directly after verbs, prepositions, or subordinating conjunctions.
Question 148Question →

For centuries, the intricate carvings on Mayan monuments remained an undeciphered mystery. In the late twentieth century, art historian Linda Schele, who studied the glyphs, that were carved on the temple, made a breakthrough by translating the history of Palenque. Her work revealed that the carvings were not mere symbols but a rich record of historical events.

Which of the following options is the correct punctuation for the underlined portion of the passage?

Show answer & explanation

Answer: Schele, who studied the glyphs that were carved on the temple, made

Answer

The correct answer is the option that correctly sets off the nonessential relative clause with commas while keeping the restrictive clause unpunctuated: 'Schele, who studied the glyphs that were carved on the temple, made'.
The correct option properly identifies that the relative clause starting with 'who' is nonessential because it modifies the specific proper noun 'Linda Schele'. Therefore, it must be enclosed by a pair of commas—one before 'who' and one after 'temple'. Additionally, the clause 'that were carved on the temple' is restrictive because it specifies which glyphs are being discussed; thus, it should not be set off by commas. This option achieves the correct balance by placing commas only at the boundaries of the nonessential clause.

Step-by-Step Solution

1
Identify the nonessential relative clause in the sentence.
The clause 'who studied the glyphs that were carved on the temple' modifies the proper noun 'Linda Schele' and is nonessential to the core meaning of the sentence.
Since 'Linda Schele' is a specific proper noun, any relative clause modifying her serves as extra, nonessential information.
2
Determine the correct punctuation for the nonessential clause.
The entire nonessential clause must be set off by a pair of commas: one before 'who' and one after 'temple'.
Nonessential elements must be isolated from the rest of the sentence using punctuation at both boundaries.
3
Analyze the restrictive clause 'that were carved on the temple' nested within the nonessential clause.
No commas should be placed around 'that were carved on the temple'.
The clause is essential (restrictive) because it specifies which glyphs are being referred to, meaning it should not be separated from 'glyphs' with punctuation.
4
Evaluate the choices to find the one that uses a pair of commas around the entire nonessential clause and no commas around the restrictive clause.
The option containing 'Schele, who studied the glyphs that were carved on the temple, made' is the only option that meets these criteria.
It places a comma after 'Schele' and after 'temple' while removing the incorrect comma before 'that'.

Key Concept

Commas with Nonessential and Parenthetical Elements
Question 149Question →

Insert the single punctuation mark that correctly connects the two independent clauses in the passage below.

Fill in the blanks below

Marine biologists have discovered that octopuses often punch fish during collaborative hunting excursions this aggressive behavior appears to prevent the fish from monopolizing the prey.
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 successfully connects two independent clauses that are closely related in meaning without the need for a coordinating conjunction.

Step-by-Step Solution

1
Analyze the clause preceding the blank.
The clause 'Marine biologists have discovered that octopuses often punch fish during collaborative hunting excursions' contains a subject ('biologists') and a verb ('have discovered') and expresses a complete thought, making it an independent clause.
Determining the grammatical structure of the surrounding clauses is necessary to choose the appropriate punctuation.
2
Analyze the clause following the blank.
The clause 'this aggressive behavior appears to prevent the fish from monopolizing the prey' contains a subject ('behavior') and a verb ('appears') and expresses a complete thought, making it a second independent clause.
Identifying both clauses as independent helps us apply the correct punctuation rule.
3
Select the correct punctuation mark to join two independent clauses without a coordinating conjunction.
A semicolon (;) is used to connect the two clauses.
Using a comma alone would cause a comma splice, and omitting punctuation entirely would create a run-on sentence. A semicolon resolves this by joining the related thoughts correctly.

Key Concept

Semicolons are used to link two independent clauses that are closely related in thought, especially when they are not joined by a coordinating conjunction.
Estimated Time:1m 0s
Question 150Question →

During a 1977 expedition in the Pacific Ocean, oceanographers aboard the research vessel *Alvin* discovered: hydrothermal vents teemed with life in the pitch-black depths, challenging the long-held belief that all food chains must begin with sunlight.

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

Show answer & explanation

Answer: discovery: hydrothermal vents teemed

Answer

The correct choice is the option that replaces the verb 'discovered' with the noun phrase 'made a startling discovery' followed by a colon.
The correct choice changes the verb 'discovered' to the noun phrase 'made a startling discovery' to form an independent clause before the colon. It also uses a colon to correctly introduce the second independent clause, which explains the discovery.

Step-by-Step Solution

1
Analyze the grammatical structure of the clause preceding the punctuation mark.
The original sentence uses 'discovered', which is a verb. A colon cannot immediately follow a verb because it leaves the preceding clause incomplete.
To use a colon, the preceding clause must be independent (able to stand alone as a complete sentence).
2
Evaluate the options that turn the preceding clause into an independent clause.
Replacing 'discovered' with 'made a startling discovery' creates an independent clause.
This establishes the necessary grammatical foundation for using a colon.
3
Examine the grammatical structure of the clause following the punctuation mark to ensure it is not left as a fragment if a period is used, or joined incorrectly if a comma is used.
The clause 'hydrothermal vents teemed with life...' is independent. Using a comma creates a comma splice, and using a period with the participle 'teeming' creates a fragment. Using a colon to connect the two independent clauses is correct because the second clause explains the first.
Colons can connect two independent clauses when the second clause illustrates or explains the first.

Key Concept

Use of colons to introduce explanation or amplification after an independent clause.
Estimated Time:1m 0s
Question 151Question →

When paleobotanists examined the fossilized leaves of the ancient ginkgo tree, they noticed several distinct features; thick cuticles, sunken stomata, and robust veins.

Which of the following options is the best replacement for the underlined portion?

Show answer & explanation

Answer: several distinct features: thick

Answer

several distinct features: thick
The correct option correctly uses a colon to introduce a list of features. The clause before the colon is independent and can stand alone as a complete sentence, satisfying the rule that a colon must follow a complete thought.

Step-by-Step Solution

1
Analyze the clause preceding the punctuation mark.
The clause 'When paleobotanists examined the fossilized leaves of the ancient ginkgo tree, they noticed several distinct features' is an independent clause that can stand alone as a complete sentence.
A colon can only be used if it is preceded by a complete independent clause.
2
Analyze the text following the punctuation mark.
The text 'thick cuticles, sunken stomata, and robust veins' is a list of items that clarifies or defines the 'several distinct features'.
Colons are used to introduce lists, explanations, or quotes that follow an independent clause.
3
Evaluate the options based on colon and semicolon rules.
The option using a semicolon is incorrect because the second part is not an independent clause. The options placing a colon after 'including' or 'were' are incorrect because a colon cannot immediately follow a verb or participle.
This leaves the option with a colon directly after 'features' as the only grammatically correct choice.

Key Concept

A colon must be preceded by an independent clause and is used to introduce a list, explanation, or amplification.
Question 152Question →

The following passage contains a blank at the boundary of two sentences. Which punctuation mark should be inserted in the blank to correctly terminate the first sentence?

Fill in the blanks below

In his keynote address at the global conservation summit, the climatologist asked whether the international community has the political resolve to restore the Mesopotamian marshes to their former ecological health This question, which highlighted the tension between agricultural demands and conservation goals, set the tone for the remaining panels of the conference.
Show answer & explanation

Answer

A period (.)
The correct punctuation is a period. The first sentence contains an indirect question introduced by 'asked whether', which functions grammatically as a declarative statement and therefore must end with a period. Additionally, the capitalization of 'This' after the blank confirms that a new sentence begins.

Step-by-Step Solution

1
Analyze the grammatical structure of the first clause leading up to the blank.
The first clause is an independent clause containing the indirect question 'whether the international community has the political resolve...'.
Identifying the clause type determines whether it requires terminal punctuation and what kind of terminal punctuation is appropriate.
2
Determine the appropriate end-of-sentence punctuation mark for an indirect question.
Since indirect questions function as declarative statements rather than direct inquiries, they must end with a period rather than a question mark.
This avoids the common error of using a question mark for statements that merely report a question.
3
Verify the boundary with the subsequent sentence.
The word following the blank ('This') is capitalized, which indicates that a new sentence is beginning and therefore a terminal punctuation mark (a period) is required rather than a comma or a semicolon.
This ensures the sentence boundary is correctly punctuated without creating a run-on or comma splice.

Key Concept

Distinguishing between direct and indirect questions to determine correct end-of-sentence punctuation.
Estimated Time:1m 0s
Question 153Question →

To ensure the safety of the tour group, the two wilderness guides' directions kept they're focus on the marked trail.

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

Show answer & explanation

Answer: guides' directions kept their

Answer

guides' directions kept their
The correct option correctly identifies that the sentence refers to two guides, which requires the plural possessive noun 'guides''. It also correctly uses the possessive pronoun 'their' to modify the noun 'focus', indicating the tour group's focus.

Step-by-Step Solution

1
Determine if the noun 'guides' should be singular or plural, and possessive or not.
The phrase 'two wilderness guides' specifies a plural subject. Since the directions belong to these guides, we need the plural possessive form, which is 'guides'' (apostrophe after the 's').
Plural nouns ending in 's' form the possessive by adding an apostrophe after the 's'.
2
Determine the correct word to modify the noun 'focus'.
We need the possessive pronoun 'their'. The contraction 'they're' (they are) and the adverb 'there' (place) are grammatically incorrect in this position.
A possessive pronoun is required to show ownership of the 'focus'.
3
Combine the correct elements to choose the best option.
The correct combination is 'guides' directions kept their'.
This option uses the correct plural possessive spelling and the correct possessive pronoun.

Key Concept

Apostrophes for Possessives and Contractions
Question 154Question →

Since the restoration team had to work with extremely delicate, historically significant artifacts, they had to implement several innovative, highly precise, preservation techniques, but the lead archivist remained concerned about the project's tight schedule.

Which choice best punctuates the underlined portion of the sentence?

Show answer & explanation

Answer: innovative, highly precise preservation techniques, but

Answer

The correct option is the one that reads 'innovative, highly precise preservation techniques, but'. This choice correctly places a comma between the coordinate adjectives, avoids a comma before the noun, and uses a comma before the coordinating conjunction to join the independent clauses.
The correct option is the one that reads 'innovative, highly precise preservation techniques, but'. In this option, the comma between 'innovative' and 'highly precise' is required because they are coordinate adjectives (they can be reversed or connected with 'and'). No comma is placed between the last adjective 'precise' and the noun phrase 'preservation techniques' because commas should not separate the final adjective from the noun it modifies. Finally, a comma is placed before the coordinating conjunction 'but' to correctly join two independent clauses.

Step-by-Step Solution

1
Analyze the relationship between the adjectives modifying the noun 'techniques'.
The modifiers 'innovative' and 'highly precise' are coordinate adjectives because they can be reversed ('highly precise, innovative preservation techniques') and joined by 'and' ('innovative and highly precise'). Thus, they must be separated by a comma. However, 'preservation' is a noun adjunct modifying 'techniques' (forming the compound 'preservation techniques'), so no comma should separate 'precise' from 'preservation'.
This determines the correct comma placement between the adjectives and the noun.
2
Analyze the clause structure of the sentence to determine how the two clauses should be joined.
The first part of the sentence ('Since the restoration team... techniques') forms an independent clause, and the second part ('the lead archivist remained concerned...') is also an independent clause. These two independent clauses must be joined using a comma and a coordinating conjunction (such as 'but') or a semicolon alone.
This determines the correct punctuation at the clause boundary to avoid run-on sentences or comma splices.
3
Evaluate the choices to find the one that matches these grammatical requirements.
The option containing 'innovative, highly precise preservation techniques, but' correctly applies both rules.
Selecting the grammatically correct option.

Key Concept

Commas with Lists, Clauses, and Coordinate Adjectives
Question 155Question →

Although some evolutionary biologists initially hypothesized that the unique structure of the narwhal’s tusk served primarily as a weapon for defense, recent sensory research suggests a far more complex purpose: it acts as a hydrodynamic sensor containing millions of nerve endings.

Which of the following options best replaces the underlined portion of the sentence?

Show answer & explanation

Answer: purpose: it acts as a hydrodynamic sensor containing

Answer

The option that uses a colon to connect the first independent clause to the second explanatory independent clause is correct.
The colon is correctly used to connect an independent clause to a second independent clause that explains, illustrates, or expands on the first. The clause before the colon is independent, and the explanation following it is grammatically complete and directly elaborates on the 'purpose' mentioned.

Step-by-Step Solution

1
Analyze the grammatical structure of the clause preceding the punctuation mark.
The clause 'Although some evolutionary biologists initially hypothesized that the unique structure of the narwhal’s tusk served primarily as a weapon for defense, recent sensory research suggests a far more complex purpose' is an independent clause.
Both colons and semicolons require an independent clause before them.
2
Analyze the grammatical structure of the phrase or clause following the punctuation mark.
The phrase 'it acts as a hydrodynamic sensor containing millions of nerve endings' is a complete independent clause that explains the 'purpose' mentioned previously.
This determines whether a colon, semicolon, or other punctuation is required.
3
Evaluate the choices to select the punctuation that correctly connects these clauses without creating errors.
A colon is appropriate to introduce the explanation. The semicolon option creates a fragment, the comma option creates a comma splice, and placing a colon after 'is' is incorrect.
Only the colon correctly connects the explanation to the preceding independent clause.

Key Concept

Colon punctuation rules
Estimated Time:1m 0s
Question 156Question →

The deep-sea explorer Sylvia Earle has spent her career advocating for the protection of marine ecosystems. The sustainable marine sanctuaries that Earle has helped establish, which she refers to as "hope spots," have prompted international conservation efforts. These protected areas serve as critical refuges for threatened species.

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

Show answer & explanation

Answer: NO CHANGE

Answer

The correct option is the one that preserves the original punctuation (NO CHANGE), keeping the restrictive clause unpunctuated and enclosing the nonessential clause in a pair of commas.
The original punctuation is correct. The clause 'that Earle has helped establish' is restrictive and must not be separated from 'sanctuaries' with a comma. The parenthetical clause 'which she refers to as "hope spots"' is nonessential and is correctly set off with a pair of commas (one after 'establish' and one after 'spots'). The plural verb 'have' agrees with 'sanctuaries' and is not separated by incorrect punctuation.

Step-by-Step Solution

1
Identify the types of clauses modifying the subject noun.
The clause 'that Earle has helped establish' is restrictive, and 'which she refers to as "hope spots"' is nonessential.
Restrictive clauses define the specific noun and cannot be removed without changing the core meaning, while nonessential clauses provide parenthetical details.
2
Determine the punctuation for the restrictive clause.
No commas should surround the clause 'that Earle has helped establish'.
Commas should not separate a restrictive clause from its referent.
3
Determine the punctuation for the nonessential clause.
Commas must be placed both before 'which' and after 'spots'.
A parenthetical element must be enclosed by a matched pair of commas.
4
Ensure the subject and verb are not separated by incorrect terminal punctuation.
The main verb 'have' must follow the nonessential clause without a semicolon.
A semicolon would incorrectly isolate the preceding clauses, resulting in a fragment.

Key Concept

Distinguishing between restrictive and nonessential clauses to apply correct comma punctuation.
Question 157Question →

The architect designed a corporate headquarters with a striking, modern, glass facade, a spacious central atrium, and a sustainable rooftop garden, but the board of directors rejected the proposal due to budget constraints.

Which of the following options represents the most grammatically correct punctuation for the underlined portion of the sentence?

Show answer & explanation

Answer: striking, modern glass facade, a spacious central atrium, and a sustainable rooftop garden, but the board of directors rejected

Answer

The choice that correctly punctuates 'striking, modern glass facade' without a comma before 'glass', separates the list items with commas, and uses a comma before the coordinating conjunction 'but' to connect the independent clauses.
The correct choice properly distinguishes between the coordinate adjectives 'striking' and 'modern' (separated by a comma) and the cumulative adjective 'glass' (which should not have a comma separating it from 'modern'). Additionally, it correctly maintains the commas separating the three items in the list and includes a comma before the coordinating conjunction 'but' to join the two independent clauses.

Step-by-Step Solution

1
Identify coordinate vs. cumulative adjectives.
'Striking' and 'modern' modify 'glass facade' independently (they are coordinate, requiring a comma), but 'glass' describes the material of the facade and forms a unit with it (cumulative), meaning no comma should separate 'modern' from 'glass'.
Coordinate adjectives require separating punctuation, whereas cumulative adjectives must not be separated by commas.
2
Evaluate the list punctuation.
The sentence lists three distinct architectural elements: 'a striking, modern glass facade', 'a spacious central atrium', and 'a sustainable rooftop garden'. These should be separated by commas, including an Oxford comma before the coordinating conjunction 'and'.
Commas are required to separate three or more items in a series.
3
Analyze the boundary between clauses.
The sentence consists of two independent clauses: 'The architect designed a corporate headquarters...' and 'the board of directors rejected the proposal...'. To join them grammatically, a comma must precede the coordinating conjunction 'but'.
A comma and a coordinating conjunction are required to link two independent clauses.

Key Concept

Distinguishing between coordinate and cumulative adjectives, structuring items in a list, and using coordinating conjunctions to join independent clauses.
Estimated Time:1m 0s
Question 158Question →

The passage below ends with an inquiry about a pioneering historical figure. Which punctuation mark must be placed in the blank to grammatically and rhetorically complete the final sentence?

Fill in the blanks below

Dr. Elizabeth Blackwell became the first woman to receive a medical degree in the United States. She faced immense discrimination throughout her studies, yet she graduated at the top of her class in 1849. How did she manage to overcome such significant obstacles to achieve her dream
Show answer & explanation

Answer

A question mark (?) is the correct punctuation mark to end the sentence.
The sentence is a direct question asking how something was accomplished. Therefore, it requires a question mark at its end.

Step-by-Step Solution

1
Analyze the structure and meaning of the sentence containing the blank.
The sentence begins with the interrogative word 'How' ('How did she manage...') and asks a direct question.
Identifying the clause type is necessary to determine the correct end-of-sentence punctuation.
2
Determine the correct punctuation mark.
Because this is a direct question, it must end with a question mark.
Standard English conventions dictate that a question mark terminates direct inquiries.

Key Concept

End-of-Sentence Punctuation
Question 159Question →

The library features a special collection of classic literature. The novel that Mary Shelley wrote, which became a bestseller, is displayed in a glass case. Visitors can view the original manuscript and hand-drawn illustrations.

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

Show answer & explanation

Answer: NO CHANGE

Answer

NO CHANGE
The correct answer is the option that makes no changes to the underlined text. The clause 'that Mary Shelley wrote' is restrictive (essential to identifying the novel) and should not be set off by commas. The clause 'which became a bestseller' is nonrestrictive (adds extra information) and must be enclosed by commas on both sides, which is correctly done in the original sentence.

Step-by-Step Solution

1
Identify whether the clause 'that Mary Shelley wrote' is essential (restrictive) or nonessential (nonrestrictive).
Essential
It specifies which novel is being referred to, so it should not be set off by commas.
2
Identify whether the clause 'which became a bestseller' is essential or nonessential.
Nonessential
It adds extra information about the novel but is not necessary to identify it, meaning it must be enclosed by a pair of commas.
3
Select the option that correctly leaves the restrictive clause unpunctuated and sets off the nonessential clause with commas on both sides.
NO CHANGE
The original sentence is already punctuated correctly.

Key Concept

Commas with Nonessential and Parenthetical Elements
Question 160Question →

Multispectral imaging has revealed hidden text on the charred Herculaneum papyri, indeed, researchers can now read passages that were previously thought to be lost forever.

Which choice best punctuates the underlined portion of the sentence?

Show answer & explanation

Answer: papyri; indeed, researchers

Answer

The correct choice is the option that reads 'papyri; indeed, researchers'.
The option 'papyri; indeed, researchers' is correct because it properly connects two independent clauses using a semicolon before the conjunctive adverb 'indeed' and a comma immediately following it.

Step-by-Step Solution

1
Analyze the grammatical structure of the clauses flanking the underlined portion.
The clause before the underlined portion ('Multispectral imaging has revealed hidden text on the charred Herculaneum papyri') and the clause after ('researchers can now read passages that were previously thought to be lost forever') are both independent clauses.
Identifying independent clauses is necessary because it dictates the type of punctuation required to join them.
2
Determine the role of the word 'indeed'.
'Indeed' is a conjunctive adverb used to introduce a statement that confirms or supports the previous statement.
Conjunctive adverbs require a semicolon before them and a comma after them when joining two independent clauses.
3
Evaluate the choices to find the one that correctly links these two clauses.
The option containing a semicolon before 'indeed' and a comma after it correctly punctuates the transition between the two independent clauses without creating a comma splice or fragment.
Eliminating options with comma splices, incorrect semicolon placement with dependent clauses, or fragments leads to the grammatically correct choice.

Key Concept

Semicolons
Estimated Time:1m 0s
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