The brain of any computer system is

ALU
Memory
CPU
Control unit E. None of the above

The correct answer is C. CPU.

The CPU, or central processing unit, is the brain of the computer. It is responsible for carrying out the instructions of the computer program. The CPU is made up of millions of tiny transistors that work together to perform calculations.

The ALU, or arithmetic logic unit, is responsible for performing arithmetic and logical operations. The memory is where the computer stores data and programs. The control unit is responsible for coordinating the activities of the CPU and other components of the computer.

None of the other options are correct.