Varun's response lacks relevance and clarity, as he delves into technical details about the Android application framework rather than addressing the use of prototyping and wireframing tools in product design. This response does not demonstrate an understanding of how these tools can be utilized to refine product designs and align features with customer expectations. In contrast, the benchmark response provides a clear, structured approach to using prototyping and wireframing tools, detailing each step from initial conceptualization to iterative refinement and alignment with development. Varun should focus on providing specific examples of how he has used these tools in past projects and how they contributed to enhancing product design based on user feedback.