Examkin

Question

Difficulty: MediumPart-to-Whole Rhetorical Function

Mangrove forests serve as critical coastal buffers, mitigating the impact of severe storms by absorbing wave energy. Specifically, the complex, interlaced prop roots of the red mangrove (*Rhizophora mangle*) create a dense physical barrier that disrupts the momentum of incoming tides. While some researchers argue that the level of protection varies significantly depending on coastal topography, others emphasize the uniform benefits these ecosystems provide in high-risk zones. Ultimately, understanding these local variations is essential for designing effective coastal conservation strategies.

Which choice best describes the function of the underlined sentence in the text as a whole?

  1. A
    It summarizes the passage's main argument that conservation efforts must account for local variations in coastal topography.
  2. It details a specific physical mechanism that illustrates the general claim made in the first sentence.Answer
  3. C
    It introduces a scientific debate regarding how topography influences wave absorption.
  4. D
    It identifies a limitation in the ability of red mangroves to protect coastlines from tidal forces.

Answer

It details a specific physical mechanism that illustrates the general claim made in the first sentence.
The correct option is correct because the first sentence of the passage makes a broad assertion about mangrove forests acting as storm buffers, and the underlined sentence immediately follows to explain the precise physical mechanism—the dense barrier created by the interlaced prop roots of the red mangrove—that allows them to do so. Thus, it functions as a specific illustration of the general opening claim.

Step-by-Step Solution

1
Analyze the role of the first sentence in the passage.
The first sentence makes a general claim: mangrove forests mitigate storm impact by absorbing wave energy.
Understanding the context of the opening statement allows us to see how subsequent details relate to it.
2
Analyze the underlined sentence to identify its specific contribution to the passage.
The underlined sentence focuses on one specific type of mangrove (red mangrove) and explains the physical mechanism (interlaced prop roots creating a barrier to disrupt tides) by which it functions.
This establishes that the underlined sentence serves as a concrete illustration or explanation of the general claim in the first sentence.
3
Evaluate the remaining sentences to ensure the underlined sentence does not serve a different function relative to the whole.
The third sentence introduces a debate, and the final sentence states a conclusion about conservation. The underlined sentence provides the foundational factual detail supporting the opening claim before these other points are introduced.
This confirms that the function is supporting/illustrating the opening claim, not summarizing the whole debate or conclusion.

Key Concept

Part-to-Whole Rhetorical Function
Rate this question

Topics

Part-to-Whole Rhetorical Function

More questions from this topic