Participants in the UPSC exam can improve their communication skills by engaging in regular practice, such as public speaking and participating in group discussions. Enrolling in workshops or courses focused on effective communication can provide valuable techniques. Reading and analyzing editorials or essays can enhance vocabulary and articulation. Additionally, practicing mock interviews or group discussions helps build confidence and clarity in expressing thoughts. Seeking feedback from peers or mentors can identify areas for improvement. Ultimately, consistent practice and reflection are key to enhancing these essential skills.