A girl has her eyes shut and is standing inside a brightly lit room. What happens to her pupils when she opens her eyes? Why? (1 point)
• Her pupils shrink because the muscles relax.
• Her pupils shrink because the muscles contract.
• Her pupils grow because the muscles relax.
• Her pupils grow because the muscles contract.
Her pupils grow because the muscles contract.
When the girl opens her eyes and enters a brightly lit room, her pupils will dilate in order to allow more light to enter the eye. This is controlled by the iris muscles contracting and expanding to adjust the size of the pupil.