Mock interviews assist candidates in fine-tuning their presentation skills by simulating the real interview environment. They provide practice in articulating thoughts clearly and responding to questions under pressure. These interviews often offer constructive feedback, highlighting strengths and areas for improvement, enabling candidates to refine their communication style. Additionally, candidates can become more comfortable with the interview format and learn to manage nervousness. Overall, mock interviews serve as a crucial preparation tool that helps aspirants perform better on the actual day.