The following text is from an architecture theory article.
Adaptive reuse transforms obsolete buildings for new purposes rather than demolishing and rebuilding. Factories become lofts; churches become restaurants; power plants become museums. Such projects preserve cultural heritage, reduce construction waste, and often cost less than new construction. However, adaptive reuse involves complex challenges: structural limitations, environmental remediation, and tensions between preservation and necessary modification.
Which choice best describes the function of the last sentence?
It provides specific cost figures for reuse projects.
It acknowledges challenges that complicate the benefits described earlier.
It contradicts the claim that reuse preserves heritage.
It introduces regulations governing building demolition.
Correct Answer: B
Choice B is the best answer. The last sentence acknowledges challenges (structural, environmental, preservation tensions) that complicate the earlier benefits.
- Evidence: The sentence states: "However, adaptive reuse involves complex challenges: structural limitations, environmental remediation, and tensions..."
- Reasoning: It introduces the downsides/difficulties to the positive picture painted earlier.
- Conclusion: The function is to acknowledge challenges.
💡 Strategy: Look for "However... complex challenges."
Choice A is incorrect because costs aren't specified. Choice C is incorrect because heritage preservation isn't denied. Choice D is incorrect because regulations aren't introduced.