How does structured programming enhance code quality?

Structured programming enhances code quality primarily by forming highly structured units of code, also known as modules or functions. This approach advocates for a clear and organized manner of writing code, where every part serves a specific purpose and follows a logical sequence.

When code is structured into well-defined blocks, it becomes easier to read, understand, and maintain. Each module can be tested independently, which improves debugging processes and reduces the likelihood of errors. This separation of concerns allows developers to focus on one aspect of the program at a time without getting overwhelmed by the entire codebase.

Moreover, structured programming encourages the use of control structures like loops, conditionals, and subroutines, making the flow of the program more predictable and manageable. Consequently, this not only enhances individual units of code but also positively impacts the overall reliability and robustness of the program.

In contrast, other choices do not directly relate to the fundamental principles of structured programming. Increasing execution speed relates more to optimization techniques, minimizing error messages is a benefit that may arise from using structured programming but is not a direct principle of it, and using complex algorithms can sometimes lead to reduced readability and maintainability, contradicting the goals of structured programming.