The correct answer is option 'C', the dispatcher.

The dispatcher is the module responsible for giving control of the CPU to the process selected by the short-term scheduler. It plays a crucial role in the process of multitasking, where the CPU needs to switch between multiple processes. Let's break down the answer further to understand the roles of the interrupt, scheduler, and dispatcher in the CPU scheduling process.

1. Interrupt:
- Interrupts are signals generated by hardware or software to interrupt the normal execution of a program.
- Interrupts can be triggered by various events, such as an I/O request completion, timer expiration, or an error condition.
- When an interrupt occurs, the CPU suspends its current execution and transfers control to a specific interrupt handler routine to handle the interrupt.
- Interrupts are essential for handling various situations and ensuring efficient resource utilization.

2. Scheduler:
- The scheduler is responsible for selecting the next process from the ready queue to allocate CPU time.
- It determines the order in which processes are executed and manages their execution.
- The scheduler can be classified into three types: long-term scheduler (admission scheduler), medium-term scheduler (swapper), and short-term scheduler (dispatcher).
- The long-term scheduler selects processes from the job queue and moves them to the ready queue, deciding which processes should be admitted to the system.
- The medium-term scheduler decides when a process should be swapped in or out of the main memory.
- The short-term scheduler (also known as the CPU scheduler) selects the next process from the ready queue to be executed on the CPU.

3. Dispatcher:
- Once the short-term scheduler selects a process from the ready queue, the dispatcher takes control.
- The dispatcher is responsible for loading the selected process into the CPU and initiating its execution.
- It performs the necessary context switching, saving the state of the currently executing process and restoring the saved state of the selected process.
- The dispatcher also transfers control to the selected process, allowing it to execute on the CPU.
- In essence, the dispatcher gives control of the CPU to the process selected by the short-term scheduler.

In summary, while all the options (interrupt, scheduler, and dispatcher) play important roles in CPU scheduling, the dispatcher is specifically responsible for giving control of the CPU to the process selected by the short-term scheduler.