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Difficulty: MediumAdjective and Adverb Usage

To transition the research facility to renewable energy, the team decided to upgrade their power grid. Designed to track the sun's movement more efficient than any system, the engineers built the solar array to maximize energy production.

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

  1. A
    more efficient than any system, the engineers built
  2. B
    more efficiently then any other system, the engineers built
  3. C
    more efficiently than any system, the engineers built
  4. more efficiently than any other system, the solar array was builtAnswer

Answer

The correct answer is the option that reads 'more efficiently than any other system, the solar array was built'.
The correct option correctly uses the adverb 'efficiently' to modify the verb 'track'. It also places 'the solar array' immediately after the introductory modifying phrase 'Designed to track the sun's movement...', which resolves the dangling modifier. Finally, it uses 'than' for the comparison and 'any other system' to make the comparison logical.

Step-by-Step Solution

1
Analyze the introductory modifier and identify the logical subject of the main clause.
The phrase 'Designed to track the sun's movement...' describes the solar array, not the engineers. Therefore, the main clause must begin with 'the solar array' to avoid a dangling modifier.
Introductory modifying phrases must be placed next to the noun they logically describe.
2
Determine whether an adjective or an adverb is needed to modify the action of tracking.
The verb 'track' must be modified by the adverb 'efficiently' rather than the adjective 'efficient'.
Adverbs modify verbs, whereas adjectives modify nouns.
3
Evaluate the comparison for grammatical and logical correctness.
The conjunction 'than' must be used instead of 'then' to express a comparison, and the phrase 'any other system' must be used instead of 'any system' to keep the comparison logical.
'Than' is used for comparisons, and 'any other' ensures that the solar array is not compared to itself.

Key Concept

Adjective and Adverb Usage, Dangling Modifiers, and Logical Comparisons
Estimated Time:1m 0s
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Topics

Adjective and Adverb Usage

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