Which of the following is an input device?

Correct option is B

Ans. (b)
Sol. A mouse is an input device that allows the user to interact with the computer by moving the cursor and selecting icons. It sends signals to the CPU and helps navigate software interfaces, making it essential for user-computer interaction.
Explanation of each option:
· (a) Monitor – Displays output from the computer.
· (b) Mouse – Correct. Used to input data or control the pointer.
· (c) Printer – Outputs data onto paper, a hard copy device.
· (d) Speaker – Output device that plays sound from the computer.