Where do the most dramatic variations in the amount of sunlight occur? (with answer choices)

a. the poles
b. the tropic of cancer
c. the tropic of capricorn
d. the equator

I would say the most dramatic variations in the amount of sunlight occur in the poles since I have personally worked in the Arctic and know that, in the summer for example, it is light all night ie 24 hours per day whereas in the winter there are only a few hours of sunlight.

Where's the we need to see the it could be any country!