Which of the following is a disadvantage of radio?
a) radio waves cover a large range if given enough power.
b) radio devices are inexpensive.
c) radio waves create electrical interference.
d) radio waves propagate easily through office walls.
e) radio devices are easy to install.

option c

Explanation:

The disadvantage of the radio signal is option c) which is radio waves create electrical interference. The radio-wave interference also called as electromagnetic interference is the phenomena that occurs due to the radio waves. This phenomena affects the electric circuits. The effects includes the electromagnetic induction, conduction or electrostatic coupling.

its c i just checked it