A strong foundation in ethics benefits UPSC candidates during the interview by equipping them to tackle moral dilemmas and societal issues effectively. Ethical reasoning demonstrates the candidate's integrity and understanding of core values necessary for civil service roles. Candidates can apply ethical principles to real-life scenarios, providing nuanced insights and solutions during discussions. This ability not only reflects a candidate’s preparedness but also contributes positively to the overall impression made on the panel, enhancing their chances of success in the selection process.