Candidates can prepare for dynamic questioning during the UPSC interview by employing mock interviews to simulate real scenarios. They should familiarize themselves with current affairs and relevant societal issues, enhancing their ability to respond thoughtfully. Developing a deep understanding of their personal background and motivations for choosing to appear for UPSC can help them convey authenticity. Additionally, maintaining composure and practicing clear articulation can significantly improve their communication skills, enabling them to effectively address unexpected questions with confidence.