Refraction of light causes the straw in the photo to appear to be displaced as it enters the water.



A photo.Short description, A photo.,Long description,
A photo shows a straw in an almost full glass of water. The straw leans against the edge of the glass. The bottom half of the straw that is in the water appears shifted to one side of the top half of the straw that is out of the water.

Question
Why does refraction cause the straw to appear this way?

Answer options with 4 options
A.
The speed of light waves change when passing from air to water.

B.
Light is reflected in the water at a different angle than in the glass.

C.
Constructive interference causes light waves in the water to change direction.

D.
Light waves bend around the straw as they pass through the water in the glass.

D. Light waves bend around the straw as they pass through the water in the glass.