There are generally more clouds near the oceans. Landlocked areas are usually at a lower altitude than coastline areas. Coastlines are usually surrounded by mountains that block air masses. Oceans change temperature slowly and regulate the temperature of nearby land.
I gave my students this multiple choice question: Why do areas in the middle of a large continent generally have more extreme differences in temperature than areas near the coastline?

Only one answer is correct among these 4 choices:
- There are generally more clouds near the oceans.
- Landlocked areas are usually at a lower altitude than coastline areas.
- Coastlines are usually surrounded by mountains that block air masses.
- Oceans change temperature slowly and regulate the temperature of nearby land.

Could you tell me which one is correct?

Oceans change temperature slowly and regulate the temperature of nearby land.