Heat caused the water to become a gas. Heat melted the water and it disappeared. Salt caused the water to become a gas. Salt melted the water and it disappeared.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: On a warm sunny afternoon, ocean water splashed onto a rock. A short time later, the rock was dry. Which statement best explains what happened to the water on the rock?
Possibilities:
- Heat caused the water to become a gas.
- Heat melted the water and it disappeared.
- Salt caused the water to become a gas.
- Salt melted the water and it disappeared.

Heat caused the water to become a gas.