Final answer:
Light being refracted refers to the bending of light as it passes through different mediums with varying optical densities, causing it to change direction.
Step-by-step explanation:
Light being refracted refers to the bending of light as it passes through a medium with different optical density. This bending occurs due to the change in speed of light when it moves from one medium to another.
For example, when sunlight passes through a person's hair, the different colors of light bend at different angles, which can make the hair appear lighter in color.
Therefore, option B. Sunlight hitting a person's hair and making it appear lighter in color, correctly describes light being refracted.
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