Relaying complex information concisely in UPSC answer writing is essential as it aids in delivering clear, impactful responses. Candidates must focus on clarity and brevity while ensuring they cover necessary details. A concise approach allows for highlighting key points without straying into excessive detail, making it easier for examiners to grasp important arguments quickly. This skill also reflects a candidate's ability to synthesize information effectively, which is crucial in demonstrating understanding and critical reasoning within the limited time available for answer writing.