It is much windier at the coast than farther inland. The temperature of the land remains fairly constant. It is much less humid at the coast than farther inland. The temperature of the ocean remains fairly constant.
I gave my students this multiple choice question: Temperature changes along the coast are usually less extreme than temperature changes farther inland. Which of the following statements best explains why?

Only one answer is correct among these 4 choices:
- It is much windier at the coast than farther inland.
- The temperature of the land remains fairly constant.
- It is much less humid at the coast than farther inland.
- The temperature of the ocean remains fairly constant.

Could you tell me which one is correct?

The temperature of the ocean remains fairly constant.