Question

The speed of light in four different materials is shown below:

Material Speed of light in thousand miles per second
A 140
B 78
C 186
D 124


Which material is the most dense?
Material A
Material B
Material C
Material D

Answer 1

Answer: B or A

Explanation: I took the test and said C which is wrong. And ik i is not D

Answer 2

Explanation: The more dense material is B