Solution

Multitasking is an operating system concept that allows multiple processes to be executed concurrently by sharing system resources. This can involve running multiple programs at once or executing multiple tasks within a single application, improving system efficiency and user experience. b) Virtualization involves creating virtual instances of computing resources but is not the same as multitasking. c) Time Sharing is a technique for sharing computing resources among users but is a broader concept that includes multitasking. d) Multiprogramming involves running multiple programs simultaneously but focuses on optimizing CPU usage rather than concurrent process execution. e) Process Scheduling is a mechanism to manage process execution but does not encompass the concept of running multiple processes concurrently.