Under decreasing brightness, what happens to the contrast of indications against the background?

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Multiple Choice

Under decreasing brightness, what happens to the contrast of indications against the background?

Explanation:
When illumination is reduced, the brightness difference between the indication and the background shrinks, so the indication blends more with the surrounding area. The eye perceives less contrast, making flaws harder to see. Therefore, the contrast is reduced.

When illumination is reduced, the brightness difference between the indication and the background shrinks, so the indication blends more with the surrounding area. The eye perceives less contrast, making flaws harder to see. Therefore, the contrast is reduced.

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