Answer:
The correct answers are C and D. Popular operating systems include macOS and Microsoft Windows
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Explanation:
An operating system is a program (usually a set of cooperating programs) that is loaded into memory after a computer is started and controls the hardware. It acts as a medium between the hardware and the computer user, with the aim of allowing the user to run programs, being responsible for the start and end of other programs, the control of hardware and the data input. Common operating systems are Microsoft Windows, Apple macOS and Linux.
