You live in the U.S., and it's summer time. If you were in space looking at Earth, this is the image you would see:
The answer to your question should really be b because we are on the right side of the Equator. The earth's axis is tilted. It is all about the tilt of the Earth's axis. Many people believe that the temperature changes because the Earth is closer to the sun in summer and farther from the sun in winter. In fact, the Earth is farthest from the sun in July and is closest to the sun in January!
