Passage Summary: Making a great design usually takes a lot of tries. Drawing a sketch is the best way for a designer to see what's working and what's confusing in their idea.

Reasoning: Successful designs evolve through iterative improvements, and sketching is the primary tool for identifying conceptual weaknesses and advantages.

Analysis: Since this is a Most Strongly Supported question, we must treat the statements as facts and see what they imply when combined. The passage links the quality of the final design to the process of sketching and revising. It specifically suggests that sketches are the primary vehicle for revealing conceptual muddles. You should look for an answer that emphasizes that without sketching, a designer is much less likely to identify flaws or achieve a high-quality final product.