Factors contributing to a successful UPSC ethics answer include a clear understanding of ethical principles, structured analysis, and relevant case studies. Candidates should aim to connect these principles to real-world scenarios, demonstrating practical applications in governance. Clarity of thought and logical reasoning are crucial for articulating arguments effectively. Incorporating varied perspectives and addressing counter-arguments can enrich responses. Ultimately, a well-rounded answer should showcase an ability to balance ethical considerations with practical implications in public administration scenarios.