Varun's response to the question about process mapping in a retail-specific context was inadequate. He simply stated, "I'm sorry, I don't know," which does not demonstrate any relevant experience or understanding of the As-Is and To-Be process mapping. To improve, Varun could have discussed any related experience or knowledge, even if not directly in retail, or expressed a willingness to learn and adapt. Mentioning familiarity with tools like BPMN or similar methodologies would have been beneficial.