Best practices for drafting concise and coherent answers in UPSC include structuring responses with clear introductions, body content, and conclusions. Starting with a brief introduction sets the context and previews key arguments. In the body, prioritizing essential points and supporting them with relevant examples enhances clarity. Utilizing bullet points can aid readability and succinctness. Moreover, the conclusion should effectively summarize findings and insights, reinforcing the main arguments presented. Repeated practice and revision are vital for honing these skills, ensuring that aspirants articulate their thoughts clearly and logically within time constraints.