Question

What medium is often used to transfer computer information?
A. air
B. water
c. Glass.
D. Optic fibers

Answer 1

optic fiber is the medium that is often used to transfer computer information 

Answer 2

The correct answer is D.

https://en.wikipedia.org/wiki/Optical_fiber
Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data rates) than wire cables.