What does lean startup’s build-measure-learn loop emphasize?

• A. Long planning cycles and heavy upfront investment
• B. Customer-only focus with no product iteration
• C. Build a minimal version, measure results, and learn to pivot or persevere
• D. Avoid customer feedback

Answer: (C)

The core idea is to turn ideas into rapid, testable experiments, learn from real customer reactions, and decide whether to pivot or persevere. You start with a minimal version of the product to test a specific assumption about what customers value. Then you measure outcomes with meaningful metrics, not vanity numbers, to see whether the experiment supports your approach. Based on what you learn, you either adjust your plan (pivot) or continue along the current path (persevere). This loop keeps development lean, reduces waste, and emphasizes validated learning through real user feedback.

Why this fits the correct choice: it captures building a small, testable version, measuring results, and using those insights to decide the next move. The other options contrast with lean startup thinking: long planning cycles and heavy upfront investment delay learning; focusing only on customers without iterating misses the product refinement process; and avoiding customer feedback eliminates the essential learning loop.