Correct option is A
TV remote controls use infrared (IR) rays to communicate with the television. When a button is pressed on the remote, it sends out a beam of infrared light in a specific pattern, which is detected by an IR receiver on the TV. The TV interprets this pattern to execute the corresponding command, such as changing the channel or adjusting the volume. Infrared rays are not visible to the human eye, but they are effective for short-range communication, making them ideal for remote controls.
