After the NEET UG examination is conducted, the National Testing Agency releases a provisional answer key along with the question paper and candidates' recorded responses. This allows candidates to compare their answers and estimate their scores. If a candidate believes that a particular answer in the provisional answer key is incorrect, they can challenge it by submitting an objection through the official NTA portal within a specified deadline. A small fee is usually charged for each challenge. Subject experts review the objections, and if a correction is found valid, the answer key is revised before the final results are declared.