The correct answer is (c) CPU.
The CPU, or central processing unit, is the main processing unit of a computer. It is responsible for carrying out the instructions of a computer program. The CPU is made up of several components, including the arithmetic logic unit (ALU), the control unit, and the registers.
The ALU is responsible for performing arithmetic and logical operations. The control unit is responsible for fetching instructions from memory and decoding them. The registers are temporary storage locations for data and instructions.
The CPU is the most important component of a computer. It is responsible for carrying out all of the instructions of a computer program. Without the CPU, a computer would not be able to function.
The other options are incorrect.
(a) The ALU is a part of the CPU. It is responsible for performing arithmetic and logical operations.
(b) The MU, or memory unit, is responsible for storing data and instructions.
(d) The I/O, or input/output, unit is responsible for communicating with the outside world.