Interdisciplinary study is significant for UPSC aspirants as it fosters a comprehensive understanding of complex issues spanning various fields like economics, sociology, and environmental science. This approach enables candidates to connect diverse topics, enriching their perspectives in written exams and interviews. It also facilitates critical thinking, which is essential for tackling multifaceted questions. By integrating knowledge from different disciplines, aspirants become more adaptable and capable of addressing the complexities of public policy and governance.