Which of the following muscles acts as a hip abductor?

The sartorius muscle plays a role as a hip abductor due to its anatomical position and action. Originating from the anterior superior iliac spine of the pelvis, the sartorius is the longest muscle in the human body and runs diagonally across the thigh to insert on the medial aspect of the tibia. When it contracts, it contributes to the abduction of the hip, allowing the leg to move away from the midline of the body.

Additionally, the sartorius assists in other movements such as flexion and lateral rotation of the hip, but its function as an abductor is notable in activities like crossing one's legs. This unique combination of actions highlights its importance in hip movement, particularly in activities that require a degree of abduction.