Liz is designing a device to communicate with light across a distance by shining a flashlight through different-colored materials toward another person. Which material would work best for her device?
A.
cardboard
B.
glass
C.
wood
D.
metal
B. glass
Glass is transparent and allows light to pass through easily. This would make it the best material for Liz's device, as the different-colored materials can be easily seen by the person on the other end.