When light changes from bright to dim the iris of the eye ________________?
Correct answer: A. dilates
- A. dilates
- B. constricts
- C. thickens
- D. remains the same
Explanation
In dim light, the pupil dilates so that more light can enter the eye; in bright light, it constricts to limit incoming light. Strictly, the pupil changes size through muscles in the iris.
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