Question

Which of the following is a rhetorical question?

a . do you know grass converts sunlight to energy?
b. is grass green?
c. how does grass get nutrients?
d. what kind of grass is that?

Answer 1

b. is grass green?
is a rhetorical question because it's just obvious that grass is green and you don't really need confirmation from someone to know that grass is green.

Answer 2

If I had to make an educated guess, it would have to be "B" "Is grass green?". I choose this because it is a very easy question and it is not necessary.