Candidates should approach the unpredictability of questions in the UPSC interview with a calm mindset. Preparation should focus on developing a strong grasp of core subjects and current affairs. Practicing mock interviews with varied questions can help simulate real scenarios. It’s crucial to exhibit adaptability while answering, demonstrating thoughtfulness and clarity. If faced with an unexpected question, candidates should take a moment to gather their thoughts before responding, ensuring a structured and coherent answer. Reflecting on previous experiences and showcasing one’s personality can also help navigate unpredictable situations confidently.