Question

a cell phone company relies on which kind of waves in order to provide service for its customers?
ultraviolet waves
infrared waves
gamma rays
microwaves

Explanation:

Cell phones use microwaves for communication. Microwaves are a type of electromagnetic wave that can carry information over long distances. They are suitable for cell phone signals because they can penetrate obstacles like buildings and trees. Ultraviolet waves are harmful to living cells and not used for communication. Infrared waves are used in short - range applications like remote controls. Gamma rays are highly energetic and dangerous, not used for cell phone service.

Answer:

microwaves