Ocean water is salty. There are mountain ranges on the ocean floor. About 97 percent of Earth's water is ocean water. Fewer clouds block sunlight over the ocean.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which fact best explains why most evaporation happens in the oceans?
Possibilities:
- Ocean water is salty.
- There are mountain ranges on the ocean floor.
- About 97 percent of Earth's water is ocean water.
- Fewer clouds block sunlight over the ocean.

About 97 percent of Earth's water is ocean water.