Correct Answer : Option (A) - Output
A computer monitor is an output device that displays information in pictorial form. A monitor usually comprises the visual display, circuitry, casing, and power supply.
* Present we are the using monitors are LCD(Liquid Crystal Display), LED(Light Emitting Diode), O-LED(Organic Light Emitting Diode) monitors.
* Previous monitors used a cathode ray tube (CRT) and some Plasma (also called Gas-Plasma) displays.