What does a subroutine help to simplify in programming?

A subroutine in programming is utilized to simplify the repetition of certain commands within a program. When a specific task or a series of operations needs to be executed multiple times, instead of rewriting the code each time, a subroutine allows programmers to write the code once and then call it whenever needed. This not only reduces redundancy but also enhances code organization and readability. It promotes modularity, making it easier to manage and modify the code.

By encapsulating repetitive tasks into a single unit (the subroutine), programmers can also facilitate debugging and testing, as changes made within the subroutine will automatically apply to all parts of the program that utilize it. Thus, using subroutines is a fundamental practice in programming, allowing for efficient code management and clearer logic flow.