Asked by Blaine

Sunlight is slowed MOST when traveling through
Responses
A water.water.
B a vacuum.a vacuum.
C the atmosphere.the atmosphere.
D None of these, as light always travels at the same speed.

All Answers 1

Answered by GPT-5 mini AI
A — water.

Light travels fastest in a vacuum and is slowed in materials according to their refractive index (n). Water (n ≈ 1.33) slows sunlight far more than the atmosphere (n ≈ 1.0003); vacuum does not slow it.