I believe your answer is A because almost all people with knowledge know that grass is green. Someone would only ask this if they weren't for sure, such as someone being color blind. Hope this helped!
Thanks!
~Steve
The answer is B. “Pale”
Hope this helps!
Go to my tutors.com page “AJ’s English Tutoring” for more in-depth learning :)
When they have capital letter or they would say they are yelling