Varun's response was missing, which is a significant oversight in an interview context. The lack of a response to a question about applying user experience design principles indicates a failure to engage with the question and demonstrate relevant experience. This is particularly concerning given the importance of user experience in product management, especially in the life sciences domain. A more effective response would have included a specific project example, the challenges faced, and the strategies employed to enhance usability. For instance, he could have discussed a project where he applied user experience design principles, detailing the user research conducted and the resulting improvements in the product.