Its height increases. Its height decreases. Its length shortens. It crests.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: When the velocity of an ocean wave decreases as it approaches a shore, what happens to the wave?
Possibilities:
- Its height increases.
- Its height decreases.
- Its length shortens.
- It crests.

Its height increases.