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 is B because light travels through medium

Answer 2

B

Step-by-step explanation:

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