The correct answer is D. (a) and (c).
A microprocessor is a CPU (Central Processing Unit) in integrated circuit form. It is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output. Microprocessors are used in a wide variety of devices, including computers, smartphones, and cars.
Option A is incorrect because a microprocessor is not another name for a computer. A computer is a system that consists of one or more microprocessors, memory, storage, input/output devices, and software.
Option B is correct because a microprocessor is a CPU in integrated circuit form. A CPU is the part of a computer that executes instructions. It is the “brain” of the computer and is responsible for controlling all of the other parts of the computer.
Option C is correct because a microprocessor executes a program of instructions. A program is a set of instructions that tells the computer what to do. The microprocessor reads the instructions from memory and executes them one at a time.
Option E is incorrect because both options A and C are correct.