Aspirants can develop critical thinking skills for UPSC by engaging in activities that challenge their reasoning and analysis. Regular reading of editorials, participating in debates, and writing essay responses on diverse topics will encourage a broader understanding of issues. Mock tests with analytical questions can also enhance the ability to think critically under pressure. Additionally, reflecting on current events and their implications is vital. Learning to evaluate different viewpoints fosters open-mindedness, essential for the nuanced understanding required in UPSC exams.