_ is the ability of an operating system to control the activities of multiple programs at the same time.?

C: Controlling multiple activities at the same time is called multitasking.

The answer is option C

C.    Multitasking

>>>>>>>>>>>>>>> C. Multitasking

Multitasking since we're dealing with multiple operations/activities in the system.

>>>>>>>>>>>>>>>>  C.    Multitasking

(C) MUlti tasking is the right option. thanks.