<prompt> The patient with least risk of pulmonary aspiration of gastric contents during induction of anesthesia is:-Markedly obese and NPO for eight hoursFed coffee four hours before elective surgeryScheduled for elective cesarean delivery and NPO for 20 hoursNPO for four hours after a full meal  <response>: NPO is same for obese and normal. NPO guidelines - 6hrs for liquid and semisolid, 2 hours NPO for clear fluids. Subset of patients who are at high risk for aspiration - pregnant women, morbidly obese rapid sequence induction, full fatty meal - 8 hours NPO. 