What is the role of refactoring in code standards?

• A. Improve structure and readability without changing external behavior, often driven by code smells and maintenance needs.
• B. Add new features without considering design.
• C. Change external behavior to meet new requirements.
• D. Refactoring is only for performance tuning.

Answer: (A)

Refactoring in code standards means restructuring existing code to improve its structure and readability without altering what the program does from the user’s perspective. When developers notice code smells—duplication, long methods, tangled dependencies—refactoring cleans up the design so it’s easier to maintain and extend, which is a primary goal of coding standards. This description fits best because the focus is on internal improvement that preserves external behavior while bringing the code in line with agreed-upon practices for clarity and maintainability. It isn’t about adding new features, changing how the program behaves for users, or solely chasing performance gains, even though cleaner code can indirectly support better performance and easier future work.