Answer the following question given this paragraph: 

The pupil is an opening in the front of the eye. It looks black because it doesn’t reflect any light. It allows light to enter the eye. The pupil automatically gets bigger or smaller to let more or less light in as needed.


Q: What is the opening in the front of the eye?

 Choices:

- the macula

- the iris

- the cornea

- the pupil

A:
the pupil
