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Modifier Placement

28 questions

All types28Multiple choice15Ordering7Fill in the blank6
Question 21Question →

Deep-ocean submersibles have recently mapped several hydrothermal vents in the Mariana Trench. Emitting mineral-rich water at temperatures exceeding 400 degrees Celsius, scientists have discovered thriving ecosystems surrounding these underwater geysers. These extreme environments support specialized bacteria that convert toxic chemicals into energy.

Which of the following is the most grammatically correct and logical revision of the underlined portion of the passage?

Show answer & explanation

Answer: scientists have discovered thriving ecosystems surrounding these underwater geysers, which emit mineral-rich water at temperatures exceeding 400 degrees Celsius.

Answer

scientists have discovered thriving ecosystems surrounding these underwater geysers, which emit mineral-rich water at temperatures exceeding 400 degrees Celsius.
The correct answer fixes the dangling modifier by restructuring the sentence so that the description of emitting mineral-rich water is placed in a relative clause ('which emit...') directly following the noun it describes ('geysers'). This choice also maintains proper subject-verb agreement, matching the plural subject 'geysers' with the plural verb 'emit.'

Step-by-Step Solution

1
Identify the dangling modifier in the original sentence.
The introductory participial phrase 'Emitting mineral-rich water at temperatures exceeding 400 degrees Celsius' is positioned to modify the subject 'scientists,' which makes no logical sense since scientists cannot emit superheated water.
Correcting the dangling modifier requires placing the modifying information immediately adjacent to the noun it logically modifies ('geysers' or 'vents').
2
Evaluate option structures for logical modifier placement and grammatical correctness.
Placing a relative clause starting with 'which' after 'underwater geysers' correctly associates the action of emitting water with the geysers. The verb in this relative clause must agree in number with the plural noun 'geysers.'
This step ensures that correcting the modifier placement does not introduce other grammatical errors such as subject-verb agreement violations.
3
Check for punctuation errors like comma splices.
Using 'they emit' creates a comma splice because it attempts to join two independent clauses with a comma and no conjunction. The relative pronoun 'which' is needed to properly connect the dependent clause.
Verifying that the final choice contains no secondary grammatical errors establishes the correct answer.

Key Concept

Modifier Placement
Question 22Question →

Read the passage below. To ensure the sentence is grammatically correct and avoids a dangling modifier, which phrase should fill the blank? Fill in the blank by typing either 'the researchers found the rare orchid species' or 'the rare orchid species was found by the researchers' exactly as shown.

Fill in the blanks below

While trekking through the dense undercanopy of the Amazon rainforest, . The plant had not been documented in this region for over fifty years.
Show answer & explanation

Answer

the researchers found the rare orchid species
The correct phrase is 'the researchers found the rare orchid species' because it starts with 'the researchers', which is the logical subject of the introductory action 'trekking'. This structure ensures the modifier is placed correctly and describes the researchers who were trekking.

Step-by-Step Solution

1
Identify the introductory modifying phrase.
The phrase is 'While trekking through the dense undercanopy of the Amazon rainforest'.
This phrase contains the participle 'trekking' and functions as an adverbial modifier that must describe the action of a logical subject.
2
Identify the logical subject that performs the action in the modifying phrase.
The logical subject must be 'the researchers' because plants (the orchid species) cannot trek.
To avoid a dangling modifier, the subject of the main clause must immediately follow the introductory phrase and be the entity performing the action.
3
Select the phrase that places the logical subject immediately after the comma.
The phrase 'the researchers found the rare orchid species' correctly begins with the logical subject.
Placing 'the researchers' as the subject of the main clause makes the sentence grammatically correct, whereas starting with 'the rare orchid species' creates a dangling modifier.

Key Concept

Modifier Placement (specifically preventing dangling modifiers by ensuring the introductory phrase is followed immediately by its logical subject)
Question 23Question →

The following passage is from an essay about Indian architectural history.

In the early eighteenth century, Maharaja Sawai Jai Singh II constructed the Jantar Mantar, a collection of nineteen architectural astronomical instruments in Jaipur, India. Featuring the world's largest stone sundial, the Maharaja designed these structures to observe astronomical positions with the naked eye. Today, the site remains a testament to the scientific innovations of Mughal-era India.

Which of the following options represents the most grammatically correct revision of the underlined portion of the passage?

Show answer & explanation

Answer: Featuring the world's largest stone sundial, these structures were designed by the Maharaja to observe astronomical positions with the naked eye.

Answer

The grammatically correct option that places the introductory modifying phrase next to the noun it describes, reading: 'Featuring the world's largest stone sundial, these structures were designed by the Maharaja to observe astronomical positions with the naked eye.'
The correct option resolves the dangling modifier by ensuring the introductory participial phrase 'Featuring the world's largest stone sundial' is immediately followed by the noun it actually describes: 'these structures'. It is also grammatically correct, avoiding comma splices and subject-verb agreement issues.

Step-by-Step Solution

1
Identify the introductory modifier and the noun it describes.
The phrase 'Featuring the world's largest stone sundial' describes the astronomical structures of Jantar Mantar, not the Maharaja.
An introductory modifier must be placed immediately before the noun it modifies to prevent dangling or misplaced modifiers.
2
Evaluate the grammar of the options that correctly place 'these structures' immediately after the introductory phrase.
One option contains a comma splice ('these structures were designed... they allowed...'), and another contains a subject-verb agreement error ('these structures... was designed...').
The correct option must not only resolve the modifier placement but also be free of other grammatical errors.
3
Select the option that is grammatically correct in all aspects.
The option using the passive voice 'these structures were designed by...' correctly links the modifier and has no other errors.
This revision produces a logical and grammatically complete sentence.

Key Concept

Modifier Placement
Question 24Question →

The following segments can be arranged to form a single, grammatically correct sentence. Arrange the segments in the correct order to construct a sentence that avoids any misplaced or dangling modifiers.

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct order of the sentence segments is: 'The museum curator displayed', 'the fragile medieval tapestry,', 'which had been restored over several months,', and 'in a temperature-controlled glass case.'
The correct order ensures that the non-restrictive relative clause starting with 'which' is adjacent to 'tapestry', the noun it logically modifies, preventing any ambiguity or misplaced modification.

Step-by-Step Solution

1
Identify the subject and main verb of the sentence.
The segment 'The museum curator displayed' is identified as the opening clause.
It contains the capitalized subject and the main active verb of the sentence.
2
Locate the direct object that is acted upon by the verb.
The segment 'the fragile medieval tapestry,' is placed immediately after the verb.
The transitive verb 'displayed' requires a direct object to follow it without awkward separation.
3
Position the relative clause modifying the object.
The clause 'which had been restored over several months,' is placed right after 'tapestry,'.
Placing it here ensures that the modifier correctly describes the tapestry, preventing a misplaced modifier.
4
Add the final prepositional phrase describing location.
The segment 'in a temperature-controlled glass case.' is placed at the end.
It provides contextual detail and contains the terminal period for the sentence.

Key Concept

Modifier Placement
Question 25Question →

In the late nineteenth century, the invention of steel-frame construction revolutionized urban architecture. By distributing the weight of the building to a metal grid, heavy masonry walls were no longer needed by architects to support upper floors. This innovation allowed structures to rise to unprecedented heights, paving the way for the modern skyline.

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

Show answer & explanation

Answer: the steel frame eliminated the need for heavy masonry walls to support upper floors.

Answer

the steel frame eliminated the need for heavy masonry walls to support upper floors.
The correct option resolves the dangling modifier by placing the logical subject 'the steel frame' immediately after the comma. This ensures that the introductory phrase 'By distributing the weight of the building to a metal grid' correctly modifies 'the steel frame' rather than 'heavy masonry walls.'

Step-by-Step Solution

1
Identify the action in the introductory modifying phrase: 'By distributing the weight of the building to a metal grid'.
The action requires a subject that is capable of distributing weight.
An introductory modifier must logically modify the subject that immediately follows the comma.
2
Analyze the subject of the main clause in the original sentence: 'heavy masonry walls'.
Heavy masonry walls cannot distribute the weight of the building; instead, the grid or steel frame does this.
This is a dangling modifier error, meaning the original sentence must be changed.
3
Evaluate the choices to locate a logical subject that should follow the introductory phrase.
The correct subject is 'the steel frame'. This rules out the option keeping the original phrasing.
Placing 'the steel frame' immediately after the comma ensures the modifier correctly describes the subject.
4
Check the remaining options for grammatical errors like subject-verb agreement and comma splices.
The option using the plural verb 'eliminate' with 'the steel frame' is incorrect due to subject-verb agreement, and the option containing two independent clauses joined by only a comma is a comma splice.
The final selection must be entirely free of grammar and punctuation errors.

Key Concept

Modifier Placement
Question 26Question →

The following passage is about the history of a unique musical instrument.

Invented in 1920 by Russian physicist Lev Sergeyevich Termen, the theremin is one of the earliest electronic musical instruments. Controlled without physical contact by the performer, the instrument's sound is produced by two metal antennas that sense the relative position of the player's hands. Because of its eerie, otherworldly tone, it is often featured in science fiction film soundtracks.

Which choice most effectively corrects the underlined portion of the sentence?

Show answer & explanation

Answer: the instrument produces sound through two metal antennas that sense the relative position of the player's hands.

Answer

the instrument produces sound through two metal antennas that sense the relative position of the player's hands.
The correct option resolves the dangling modifier by placing the logical subject 'the instrument' immediately after the introductory modifier. It is grammatically correct and correctly describes the relationship between the performer and the instrument.

Step-by-Step Solution

1
Identify the introductory modifier and determine its logical target.
The phrase 'Controlled without physical contact by the performer' must modify a noun representing what is actually being controlled. The instrument itself is controlled, not 'the instrument's sound'.
Introductory modifiers must be immediately followed by the noun they describe to avoid dangling modifiers.
2
Evaluate the choices to find which one begins with the logical subject.
The choices starting with 'the instrument' correctly place the logical subject after the modifier, which eliminates the dangling modifier present in the original sentence.
This step narrows the choices down to options that resolve the modifier placement issue.
3
Verify the remaining choices for other grammatical errors.
The option containing the subject-verb agreement error ('the instrument... make') and the option containing the comma splice are incorrect. Only the option stating 'the instrument produces sound through two metal antennas that sense the relative position of the player's hands' has no grammatical errors.
The correct answer must be grammatically correct in all aspects, not just in modifier placement.

Key Concept

Modifier Placement
Estimated Time:1m 0s
Question 27Question →

The passage below contains two blanks. Fill in each blank with the correct phrase from the choices provided to ensure the passage is grammatically correct and free of misplaced or dangling modifiers.

For blank 1, choose and type exactly one of the following:
* the city council renovated the historic theater
* the historic theater was renovated by the city council

For blank 2, choose and type exactly one of the following:
* which was designed in the 1920s and now shines brightly over the plaza
* which now shines brightly over the plaza designed in the 1920s

Fill in the blanks below

The historic downtown district had fallen into disrepair over the last decade. Hoping to attract more tourists, . The project focused on restoring the ornate marquee, .
Show answer & explanation

Answer

The correct passage reads: 'The historic downtown district had fallen into disrepair over the last decade. Hoping to attract more tourists, the city council renovated the historic theater. The project focused on restoring the ornate marquee, which was designed in the 1920s and now shines brightly over the plaza.'
In the first blank, the phrase 'the city council renovated the historic theater' is correct because the subject of the clause ('the city council') is the logical entity that is hoping to attract tourists. In the second blank, the phrase 'which was designed in the 1920s and now shines brightly over the plaza' is correct because it ensures the modifier 'designed in the 1920s' refers to the marquee, not the plaza.

Step-by-Step Solution

1
Identify the target of the introductory participial phrase 'Hoping to attract more tourists'.
The subject of the main clause must be the entity that actually performs the action of 'hoping' (the city council).
This prevents a dangling modifier where the 'historic theater' is illogically described as hoping to attract tourists.
2
Select the correct phrase for the first blank.
Choose 'the city council renovated the historic theater'.
This properly aligns the introductory modifier with its logical subject.
3
Determine the correct placement of the modifier 'designed in the 1920s'.
The modifier should be placed directly adjacent to 'ornate marquee' which it is describing, rather than 'plaza'.
This avoids a misplaced modifier that would suggest the plaza was designed in the 1920s.
4
Select the correct phrase for the second blank.
Choose 'which was designed in the 1920s and now shines brightly over the plaza'.
This ensures the relative clause clearly modifies the marquee.

Key Concept

Modifier Placement
Question 28Question →

Read the passage below. To ensure that the introductory phrase logically modifies the subject of the sentence, which researcher's name should be placed in the blank?

Fill in the blanks below

Having spent decades studying chimpanzee behavior in Gombe Stream National Park, revolutionized our understanding of primate social structures.
Show answer & explanation

Answer

Jane Goodall
The introductory modifier describes someone who spent decades studying chimpanzees in Gombe. To avoid a dangling modifier, the subject immediately following the comma must be the entity performing that action. Jane Goodall is the correct subject because she is the one who conducted the research.

Step-by-Step Solution

1
Analyze the introductory modifier to identify the action described.
The opening modifier is 'Having spent decades studying chimpanzee behavior in Gombe Stream National Park', describing the action of studying chimpanzees.
An introductory participial phrase must describe the subject immediately following the comma.
2
Determine the logical subject who performed the action.
The person who performed this long-term study is Jane Goodall.
If any other noun (such as an abstract concept or a scientific discovery) is placed in the blank, the modifier will dangle and lead to an ungrammatical construction.

Key Concept

Modifier Placement
Estimated Time:1m 0s
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