Which sentence from the letter best supports the idea that the author approves of using silicon-based panels in some circumstances?

Question

A.
The foundation would help pay for the installation, answering possible objections based on cost. (paragraph 2)
B.
Some of the electricity we use in this city comes from generators that burn coal or petroleum fuel. (paragraph 3)
C.
By using perovskite in place of silicon, manufacturers can avoid some of the environmental costs and risks of silicon-based solar cells. (paragraph 7)
D.
The technology is still developing, and for now, silicon-based solar panels are the only realistic option. (paragraph 8)

Answer 1

The sentence that best supports the idea that the author approves of using silicon-based panels in some circumstances is:

D. The technology is still developing, and for now, silicon-based solar panels are the only realistic option. (paragraph 8)

This sentence suggests that while there may be advances in technology, silicon-based panels are currently a practical choice, indicating a level of approval for their use in the present context.