The stages of the UPSC civil services examination process include three main phases: the Preliminary Examination, Mains Examination, and the Personality Test (Interview). The Preliminary Examination consists of objective-type questions to screen candidates, while the Mains Examination comprises written papers that evaluate knowledge and analytical skills. Following this, candidates who qualify the Mains must undergo the Personality Test, where their suitability for a civil services role is assessed. Each stage is crucial for a candidate’s progression, with the final ranking determining selection for various services.