The correct answer is (b) Central Processing Unit (CPU).
The CPU is the brain of the computer. It is responsible for carrying out the instructions of the computer program. The CPU is made up of several components, including the control unit, the arithmetic logic unit, and the registers.
The control unit is responsible for fetching instructions from memory, decoding them, and executing them. The arithmetic logic unit is responsible for performing arithmetic and logical operations. The registers are temporary storage locations for data and instructions.
The CPU is the most important component of the computer. It is the one that actually does the work. The other components of the computer, such as the memory, the storage, and the input/output devices, are all there to support the CPU.
(a) The control unit is responsible for fetching instructions from memory, decoding them, and executing them. It is not the brain of the computer.
(c) The arithmetic logic unit is responsible for performing arithmetic and logical operations. It is not the brain of the computer.
(d) The cache memory unit is a small amount of high-speed memory that is used to store frequently accessed data. It is not the brain of the computer.