Vishal's response demonstrates a good understanding of how to visualize exam security data trends using line and bar charts. He effectively describes the use of line charts for trend analysis and bar charts for contextual insights, aligning well with the benchmark response. However, his explanation could be more structured and detailed, particularly in discussing the use of interactive dashboards and the specific role of Power BI and Excel in enhancing data visualization. Adding more depth about how these tools facilitate stakeholder decision-making would strengthen his response.