Explanation:

- ALU (Arithmetic Logic Unit):

- The ALU is where the actual execution of instructions takes place.

- It performs arithmetic calculations and logical operations.

- It is a fundamental part of the CPU.

- Control Unit:

- It manages and coordinates all the activities of the computer.

- It interprets instructions and directs the operations of the processor.

- RAM (Random Access Memory):

- RAM temporarily stores data that the CPU needs during processing.

- It is volatile, meaning data is lost when power is off.

- Registers:

- Small storage locations within the CPU.

- Hold data and instructions temporarily during processing.

- Correct Answer: ALU