What is the purpose of comments in code?

The main purpose of comments in code is to explain or annotate different sections for better readability, particularly for other programmers who may be reading or maintaining the code in the future. Comments provide context, describe the functionality of specific code segments, clarify why certain decisions were made, and can offer instructions for future modifications. This practice enhances collaboration and understanding among team members and helps improve overall code maintainability. By using comments effectively, programmers can ensure that their intentions are clear, making the code easier to navigate and understand, especially for those who did not originally write it.

Other choices, such as highlighting errors, improving performance, or securing the code, do not align with the primary function of comments. Comments cannot detect errors in code, do not impact performance, and do not provide any security measures. Their sole purpose is communication and clarification within the code.