A medical assistant must prepare a patient for an abdominal examination to facilitate access to the abdominal organs while ensuring patient comfort. Which patient position best achieves this?
Patient lies flat on their back with legs extended straight on the table
Patient lies on their left side with right leg bent and left leg slightly bent
Patient sits semi-upright at a 45-degree angle with legs extended
Patient lies on their back, with both knees bent and feet flat on the table