Question Analysis

The question provides four options, and the task is to identify the correct answer. The question type is multiple-choice, and the given information is limited to the options.

Answer Explanation

Option A is the correct answer.

To explain why this is the correct answer, let's look at each option:

Option A: A set of instructions that tells a computer what to do.

This option describes a computer program accurately. A program is a set of instructions that tell a computer what to do. Programs are written in programming languages and are executed by computers.

Option B: A device that performs arithmetic and logical operations.

This option describes a computer's central processing unit (CPU). The CPU is the part of the computer that performs arithmetic and logical operations.

Option C: A machine that can store, retrieve, and process data.

This option describes a computer accurately. A computer is a machine that can store, retrieve, and process data.

Option D: A device that connects computers to a network.

This option describes a network interface card (NIC). A NIC is a device that connects computers to a network.

Therefore, option A is the correct answer as it accurately defines a computer program.

Conclusion

In summary, the correct answer to the question is option A, a set of instructions that tells a computer what to do. This option accurately describes a computer program, which is a set of instructions that tell a computer what to do.