Developing presentation skills benefits candidates preparing for the UPSC exam by enhancing their ability to communicate ideas clearly and persuasively. Mastery of presentation techniques enables candidates to effectively engage their audience during interviews and discussions. By practicing structured presentations, candidates learn to organize thoughts logically, making complex topics more understandable. It also assists in improving non-verbal communication skills, such as body language and eye contact, which are crucial during interviews. Furthermore, strong presentation skills can lead to higher confidence levels, helping candidates articulate their viewpoints effectively and positively impacting their performance in the exam.