What is the key benefit of using comments in code?

The key benefit of using comments in code is to make it easier to understand. Comments serve as explanatory notes that provide insight into what specific sections of the code are intended to do. This is particularly helpful for anyone reading the code later, whether it be the original author revisiting their work after some time or someone else who needs to maintain or build upon it.

By incorporating comments, developers can articulate their thought processes, clarify complex logic, and outline the purpose of functions or variables. This practice enhances readability and assists in collaboration among team members, ultimately leading to better communication and a reduced risk of misunderstanding the code's functionality.

While reducing file size, optimizing execution, and securing sensitive information can be important considerations in programming, they are not directly related to the primary purpose of comments, which is to convey information clearly and improve the overall understanding of the code.