Final answer:
The two input devices from the options are C) Keyboard and E) Mouse. Keyboards allow users to input text and commands, while mice enable cursor movement and on-screen selections.
Step-by-step explanation:
In the context of computing, an input device is any hardware that allows a user to enter data into a computer. For this question, we are identifying which devices among the ones listed are input devices.
The correct answers are:
C) Keyboard and E) Mouse.
The keyboard is a peripheral that allows a user to input text, numbers, and other commands into a computer. Similarly, a mouse is a pointing device that enables the user to interact with the graphical user interface of a computer by moving a cursor and selecting objects on the screen.
On the other hand, a printer (A) is an output device, used to print documents onto paper, and a monitor (B) is also an output device, displaying information visually to the user. Lastly, a speaker (D) is another type of output device which outputs sound.