Blue-eyed Tracy came out of the movie theater after a matinee. What kept Tracy from being blinded by too much sudden sunlight?

Question

Quizplus · Accepted Answer

The muscles in the iris help to control the size of the pupil, which regulates how much light enters the eye. In this case, the muscles in Tracy's iris would have contracted in response to the sudden bright light, reducing the size of her pupil and preventing her from being blinded. Option B and C are incorrect as they refer to reducing the size of the iris or lens respectively, which does not directly affect how much light enters the eye. Option D is also incorrect as Tracy was not permanently blinded.

Blue-Eyed Tracy Came Out of the Movie Theater After a Matinee