Final answer:
The part of the eye that determines eye color is the iris, which controls the size of the pupil based on light conditions.
Explanation:
The part of the eye that people see when they notice your eye color is called the iris. The iris is the colored part of the eye that surrounds the pupil and is responsible for controlling the size of the pupil based on light conditions.
In bright light, the pupil constricts to allow less light to enter the eye, while in dim light, it dilates to capture more light. The iris plays a crucial role in regulating the amount of light that enters the eye and affects how much of the eye's color is visible.
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