Interview candidates can effectively present their opinions in the UPSC interview by articulating their thoughts clearly and confidently. It’s crucial to understand the context of questions and respond based on informed perspectives rather than emotional reactions. Using structured responses, candidates can begin with a clear statement of their opinion, followed by robust reasoning, and ideally end with a personal anecdote or relevant example to reinforce their stance. Active listening during the interview can also help in addressing follow-up questions effectively. Maintaining composure and confidence is key to leaving a positive impression on the interview panel.