Question

question 6 of 10 which of the following is a rhetorical question? a. what are some promising techniques for making solar cells more efficient? b. is wind or solar power the most cost effective alternative to fossil fuels? c. what qualifies a source of energy as renewable or nonrenewable? d. which do you think will run out first? coal and oil or wind and sunlight?

Explanation:

A rhetorical question is one asked not for an answer but for effect. Options A, B, and C seek real - information answers about energy sources and technologies. Option D is a rhetorical question as it is used more for emphasis on the contrast between renewable and non - renewable resources rather than seeking a specific answer.

Answer:

D. Which do you think will run out first? Coal and oil or wind and sunlight?