Language skills are essential for performance in UPSC written exams because they influence clarity, coherence, and articulation of thoughts. Proficiency in English (and regional languages) enables candidates to express ideas effectively, enhancing the quality of answers. Good language skills also facilitate better comprehension of complex topics and improve essay writing, vital for securing higher marks. Additionally, fluency in language aids in developing a strong narrative, allowing candidates to present arguments persuasively. Therefore, mastering language skills can significantly impact overall exam performance.