What is the process of repeating the design steps to improve a solution based on feedback called?

• A. Modification
• B. Iteration
• C. Optimization
• D. Validation

Answer: (B)

Iteration is repeating the design steps to improve a solution based on feedback. In engineering, you build or test a version, learn from the results, and then make changes in the next cycle. This ongoing loop uses feedback to refine performance, functionality, or cost until the design meets the goals. This differs from a simple modification, which is just changing something without necessarily re-running the whole design cycle; optimization is about pushing performance to the best possible level, often as a goal of the process; and validation is the testing step to check if requirements are met, not the act of repeating the steps to improve.