Question

read this paragraph about the benefits of a green roof.
a green roof is created by placing soil and plants on a specially designed roof. scientific research has shown that a green roof has many benefits. plants naturally absorb energy from the sun and convert it into chemical energy that is stored in the bonds of sugar during photosynthesis. the roof materials also help insulate the building. in addition, a green roof helps control runoff as plant roots absorb rainwater. it may also provide habitat for native species.
which sentence from the paragraph supports the idea that green roofs cut heating - cooling costs?
a. scientific research has shown that a green roof has many benefits compared with traditional roofs.
b. plants naturally absorb energy from the sun and convert it into chemical energy that is stored in the bonds of sugar during photosynthesis.
c. the roof materials also help insulate the building.
d. in addition, a green roof helps control runoff as plant roots absorb rainwater.

Explanation:

The question asks for a sentence that supports the idea that green roofs cut home - cooling costs. Option D mentions that green roofs help counter runoff as plant roots absorb rainwater. While this doesn't directly relate to cooling costs, the other options are even less relevant. Option A just states that green roofs have many benefits compared to traditional roofs without specifying cooling costs. Option B focuses on plants converting solar energy. Option C is about soil moisture regulating the building. Option D is the most relevant among them as it implies a beneficial environmental impact which could potentially be related to energy - related aspects like cooling.

Answer:

D. "In addition, a green roof helps counter runoff as plant roots absorb rainwater."