An End User's Laptop Has a USB Mouse Connected

Multiple Choice

An end user's laptop has a USB mouse connected. The user removes the USB mouse to pack up at the end of the work day. Before shutting down, the user tries to check a document but finds the built-in peripherals no longer work. Which of the following would BEST resolve this issue?

A) Check the keyboard layout in Settings.
B) Check the touch-pad settings.
C) Check the power management settings.
D) Check that the function key is not stuck.