Multiple choice general knowledge

The pupil of the eye expands how much percentage as when a person looks at something pleasing

  1. 45

  2. 50

  3. 70

  4. 20
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A Correct answer
Explanation

The 45% figure for pupil expansion when viewing something pleasing appears in some trivia sources but is not a well-established scientific fact. Pupil size is controlled by the autonomic nervous system and does dilate in response to emotional and cognitive stimuli, but the exact percentage varies significantly based on lighting conditions, individual differences, and the nature of the stimulus.

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