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Zorluk: ZorMeeting Specific Rhetorical Goals

Passage Excerpt:

For centuries, scientists have marveled at the durability of ancient Roman concrete, which has survived for two millennia in harsh marine environments. Recently, researchers discovered that the Romans used a hot-mixing method, leaving small, white mineral fragments known as 'lime clasts' throughout the material. Previously, these lime clasts were once dismissed as a sign of poor mixing.

Prompt:

Given that all the choices are true, which choice most effectively highlights the active, self-healing role that lime clasts play in maintaining the structural integrity of Roman concrete over time?

  1. A
    These lime clasts, which are rich in calcium and form at high temperatures, were initially ignored by researchers who assumed they were merely the result of sloppy mixing.
  2. B
    Water enters the concrete when cracks form, this dissolves the lime clasts, which then recrystallize to fill the gaps.
  3. When tiny cracks form in the concrete, water enters and dissolves these lime clasts, which then recrystallize as calcium carbonate to plug the fissures.Cevap
  4. D
    Although modern concrete is cheaper to produce, the ancient Roman concrete containing these clasts is far superior, meaning we should adopt hot-mixing techniques today.

Cevap

The choice describing water entering cracks, dissolving the lime clasts, and recrystallizing to plug the fissures.
The correct choice successfully describes the dynamic self-healing process—cracking, water entry, dissolution, and recrystallization to plug fissures—in a grammatically correct sentence, thereby directly fulfilling the rhetorical goal.

Adım Adım Çözüm

1
Analyze the prompt to identify the specific rhetorical goal.
The target goal is to find a choice that specifically highlights the 'active, self-healing role' of lime clasts in maintaining structural integrity over time.
This establishes the main criteria for assessing the content of the answer options.
2
Check the answer options for grammatical errors.
The option stating that water enters the concrete when cracks form contains a comma splice because it joins two independent clauses without a proper coordinating conjunction or punctuation.
ACT English requires the correct answer to be free of grammatical errors.
3
Evaluate the remaining grammatically correct options against the rhetorical goal.
The option detailing how water dissolves the clasts and recrystallizes to plug fissures explains the self-healing mechanism. The options discussing historical assumptions by researchers and comparing costs to modern concrete fail to address this role.
Only the correct option successfully illustrates the active process of self-healing requested by the prompt.

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Meeting Specific Rhetorical Goals
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Meeting Specific Rhetorical Goals

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