Logical reasoning is essential in the civil services aptitude test conducted by UPSC. It evaluates a candidate's ability to analyze arguments, identify assumptions, and draw conclusions, which are crucial for decision-making in public administration. Strong logical reasoning skills help in solving complex problems and developing strategic plans, thereby equipping candidates to handle the intricacies of governance. Furthermore, being adept in this area enhances candidates' performance in various evaluation segments of the test, ensuring they can think critically under pressure.