________ is one of the 12 Purposes of Prototyping in which we build prototypes to...

“Build to Learn” is the correct purpose because the stem emphasizes testing hypotheses. A prototype built to learn is not merely a visual model or communication artifact; it is an experimental device used to generate evidence. In innovation work, teams often hold assumptions about customers, contexts, needs, behaviors, and problems. A learning prototype helps test whether those assumptions are valid. Option B, Build to Empathize, is closely related but different: it is primarily about developing deeper understanding of the customer’s world, emotions, and context. Option A, Build to Think, is about using physical or tangible representation to stimulate analysis and synthesis. Option D, Build to Clarify, is about making an idea clearer to the team or stakeholders. The question’s phrase “test hypotheses about the customer and their situation/problem” points to learning through evidence. Therefore, the correct answer is Build to Learn.