Which example best represents validated learning?

A team runs an A/B test on two landing pages. Version B increases signups but does not improve activation, payment, or retention. Which interpretation is strongest?

MedQueue AI is a startup developing an AI scheduling assistant for small medical clinics. The founders believe clinics will adopt it because missed appointments and scheduling delays create financial losses. The team wants to build a fully automated AI system integrated with electronic health records, insurance verification, text reminders, and predictive no-show scoring. However, integration would take nine months and require expensive compliance work.Instead, the team runs a Wizard of Oz test with three clinics. Clinic staff forward scheduling requests to MedQueue AI, but behind the scenes, humans manually triage requests, suggest appointment times, and send reminders. After four weeks, two clinics continue using the service, one clinic stops because staff distrust the manual handoff, and clinic managers say they would only pay if the system reduces staff time without creating compliance risk. The team has not yet tested willingness to pay formally.Which critique of the Lean Startup approach is most directly illustrated?

A subscription startup loses 12 percent of users each month and adds 13 percent new users each month. Which issue deserves the most attention?

Which situation best demonstrates sustainable growth?

A founder argues, “Our growth problem is awareness, so we should spend more on ads.” The product has weak repeat usage and low retention. Which response is strongest?

Which response best turns a mistake into organizational learning?

CampusCart is a student-run service that helps students buy basic groceries and dorm supplies from nearby stores. The team’s original vision is a full mobile app with saved carts, delivery tracking, loyalty rewards, roommate-shared payments, and partnerships with multiple retailers. The team believes students are frustrated because they lack cars and do not want to spend time taking rideshares to shop. Before building the full app, the team runs a manual test: it posts a simple order form for one residence hall, offers delivery from one store twice per week, and asks students to pay a $4 delivery fee upfront.In the first week, 45 students visit the order form, 18 submit an order, 15 pay the delivery fee, and 11 reorder the following week. However, several students complain that the available delivery windows are inconvenient. Some students also ask whether the service can deliver snacks late at night rather than scheduled grocery bundles. The team is now debating whether to build the full app, expand to all residence halls, change the offer, or run another narrower experiment.If the team shifts from scheduled grocery bundles to late-night snack delivery because students show stronger urgency for that use case, which pivot type best fits?

A team decides to test one feature with ten users this week rather than wait two months to release a complete platform. This reflects which operating principle?

A team creates a two-minute video showing how a future product would work, places it on a landing page, and measures how many target customers request early access. This is best classified as: