Answer the following question given this paragraph: 

Refraction is another way that waves interact with matter. Refraction occurs when waves bend as they enter a new medium at an angle. You can see an example of refraction in Figure below . Light bends when it passes from air to water. The bending of the light causes the pencil to appear broken.


Q: Light bends when it passes in from what to what?

 Choices:

- air to ground

- product to water

- water to air

- air to water

A:
air to water
