21. - **use case**:
Score: 0
Qualitative Assessment: Needs Improvement
Description: Varun did not mention use case development. He should discuss his experience with creating and utilizing use cases.

22. - **use case development**:
Score: 0
Qualitative Assessment: Needs Improvement
Description: Varun did not demonstrate any knowledge of use case development. He should provide examples of his work in this area.

23. - **prototyping and wireframing**:
Score: 0
Qualitative Assessment: Needs Improvement
Description: Varun did not mention prototyping or wireframing. He should discuss his experience with these tools and techniques.

24. - **continuous improvement frameworks**:
Score: 0
Qualitative Assessment: Needs Improvement
Description: Varun did not demonstrate knowledge of continuous improvement frameworks. He should highlight his experience with frameworks like Lean or Six Sigma.

25. - **customer journey mapping**:
Score: 0
Qualitative Assessment: Needs Improvement
Description: Varun did not mention customer journey mapping. He should discuss his experience with mapping customer journeys to improve user experience.