The UPSC plays a crucial role in the selection of civil servants in India by conducting the Civil Services Examination, which consists of a preliminary screening, a mains examination, and an interview. The examination is designed to assess the candidate's knowledge, critical thinking, and suitability for various administrative roles. The UPSC is responsible for forming the final merit list, which determines the allocation of services such as IAS, IPS, and IFS among successful candidates. Their impartiality and adherence to selection criteria ensure that the best candidates enter public service.