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Difficulty: MediumWord Precision and Clarity

Ancient Roman harbor structures built from volcanic ash concrete have survived immersion in seawater for over two millennia. Modern materials scientists discovered that when seawater interacts with the concrete's minerals, rare crystalline structures grow within the matrix and reinforce it. This unique chemical process enables the ancient piers to handle centuries of wave action and mechanical stress.

Which choice best maintains the formal academic tone of the passage and most precisely describes the concrete's ability to resist physical forces?

  1. A
    NO CHANGE
  2. withstandAnswer
  3. C
    undergo
  4. D
    confront

Answer

The word 'withstand' provides the most precise meaning and maintains the formal tone required by the passage.
The word 'withstand' accurately describes an object's ability to resist physical forces without failing, aligning perfectly with the scientific context and formal tone of the excerpt.

Step-by-Step Solution

1
Analyze the context and tone of the passage.
The passage is a formal, scientific discussion about materials science and structural durability under environmental pressure.
Word choice in ACT English must fit both the specific meaning of the sentence and the established stylistic register.
2
Evaluate the original underlined word against the context.
The word 'handle' is overly colloquial and imprecise when describing how concrete reacts to mechanical forces.
An informal verb weakens the academic tone of a scientific text.
3
Compare the remaining options to find the word that offers exact precision and appropriate tone.
'Withstand' specifically means to offer strong resistance to or remain undamaged by physical force, making it the ideal choice.
It accurately describes structural resistance while maintaining a formal register.

Key Concept

Word Precision and Tone Register
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Topics

Word Precision and Clarity

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