Effective answer writing in the UPSC Mains involves clarity, coherence, and conciseness. Key tips include structuring answers with clear **introduction**, **body**, and **conclusion**. Using bullet points can enhance readability, while highlighting key terms emphasizes critical ideas. It's essential to stay relevant to the question while addressing all parts comprehensively. Time management is crucial; aspirants should practice writing within the allotted time to simulate exam conditions. Finally, developing a personal style that maintains formal language while being engaging can help convey ideas effectively, making answers stand out to evaluators.