two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate?

a) produce x‒rays using colliding electrons and send them to radios, which capture sound.

b) send messages using infrared radiations, which travel in the form of waves.

c) send radio waves through intervening media like radio and television.

d) produce sound waves using microwaves from heated objects.

the answer is C. Send radio waves through intervening media like radio and television.

this is because you cant hear voices through infrared waves, x-rays, and heating up objects. that make no sense.

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."

the right answer is c i just did the question.