Question

Which is true about visible light?
A. It travels fastest through a medium, such as water or air.
B. It is the only part of the electromagnetic spectrum that
we can see.
C. It cannot travel through a vacuum.

Answer 1

Answer:

B

Explanation:

Light travels through medium but is fastest through vacuum, so C is wrong, and A is wrong. B is the correct answer.

Answer 2

Answer is B because light travels through medium