English proficiency plays a significant role in the UPSC examination, as it directly impacts comprehension, communication, and critical analysis. A strong command of English allows candidates to effectively articulate their thoughts during the written test and interviews, which are crucial for showcasing their understanding of complex topics. Additionally, English is the medium of instruction for most UPSC study materials and current affairs, making it essential for aspiring candidates to grasp the nuances of language effectively. Therefore, investing time in developing proficiency in English can enhance overall exam performance.