Its path widens. Its path bends. Its path becomes shorter. Its path continues in a straight line.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What happens to the path of a light ray as it passes from air into water at an angle?
Possibilities:
- Its path widens.
- Its path bends.
- Its path becomes shorter.
- Its path continues in a straight line.

Its path bends.