What term describes repeating the design or problem-solving process based on testing and feedback?

• A. Modification
• B. Iteration
• C. Revision
• D. Verification

Answer: (B)

Repeating the design or problem-solving process based on testing and feedback is iteration. The idea is a loop: design something, test how it performs, learn from the results, and then refine the design before testing again. Each cycle improves the solution and helps handle uncertainty about what works best. For example, you might build a prototype, run tests, note where it fails or could be lighter or stronger, adjust dimensions or materials, and then test again to see if the changes helped. The other terms describe changes or checks rather than the ongoing loop: modification or revision are edits to the design, not the repeated process itself, and verification is the act of confirming the final product meets requirements rather than driving the continuous improvement cycle.