The following text is from an environmental science article.
Wetlands were once viewed as wasteland to be drained for development. Modern understanding recognizes them as vital ecosystems providing flood control, water filtration, and wildlife habitat. Coastal wetlands buffer communities from storm surge, services valued in the billions annually. This shift in perception has driven restoration efforts that now reclaim previously developed areas.
Which choice best describes the overall structure of the text?
It traces a change in understanding and its consequences.
It provides instructions for wetland restoration projects.
It compares wetland ecosystems across different continents.
It argues for stricter environmental regulations.
Correct Answer: A
Choice A is the best answer. The text traces perception change (wasteland to vital) and its consequences (restoration efforts).
- Evidence: The text notes the past view: "once viewed as wasteland." It notes the modern view: "recognizes them as vital ecosystems." It notes the consequence: "This shift... has driven restoration efforts."
- Reasoning: The structure follows a timeline of changing ideas leading to changing actions.
- Conclusion: This matches "traces a change in understanding and its consequences."
💡 Strategy: Track the timeline: Past (wasteland) -> Present (vital) -> Result (restoration).
Choice B is incorrect because no restoration instructions are given. Choice C is incorrect because continents aren't compared. Choice D is incorrect because regulations aren't discussed.