Which of the following components controls how hardware works?

A service is a program that runs in the background, typically without a user interface, performing system-level functions, but it doesn't directly control how hardware works.

A driver (device driver) is a software program that provides the operating system with the necessary instructions to communicate with and operate a specific piece of hardware, such as a printer, graphics card, or network adapter. Without the correct driver, the hardware device may not function correctly or at all.

A process is an instance of a running computer program, and while processes might use hardware, they don't control how the hardware itself functions.

An interface is a point where two separate systems or components meet and interact, but it is not the software that controls the hardware's operation.