The OMR (Optical Mark Recognition) sheet is the answer sheet used in the NEET UG examination. Candidates must mark the correct option by completely darkening the corresponding circle on the sheet using the pen provided at the exam center. Each question has four options labeled A, B, C, and D. Candidates must ensure that the bubble is filled properly without stray marks. Any overwriting, multiple markings, or incomplete shading may lead to the answer being considered incorrect during evaluation. Candidates are also required to fill details such as roll number and question paper code on the OMR sheet carefully.