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  • Pupils shrink when sudden bright light is beamed into the...
Multiple choice

Pupils shrink when sudden bright light is beamed into the eye. The light is an example of a ...

  1. stimulus

  2. response

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A stimulus is a signal to which an organism responds. The bright light acts as the external signal that triggers the pupil's contraction.

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