Public speaking proficiency significantly impacts UPSC interview performance. Candidates with strong public speaking skills can articulate their thoughts clearly and effectively, which is crucial in presenting their knowledge and opinions. Confident speakers are more adept at engaging with interviewers, responding to questions with poise and clarity. Practicing public speaking helps candidates refine their ability to organize thoughts quickly and communicate them persuasively. Furthermore, it minimizes anxiety during interviews, leading to better overall performance and enhancing candidates' chances of succeeding in the highly competitive selection process.