Which muscle connects to the head of the fibula?

The biceps femoris tendon is the correct answer because this tendon is part of the hamstring muscle group, and it attaches to the head of the fibula. The biceps femoris consists of two parts: the long head, which originates from the ischial tuberosity of the pelvis, and the short head, which arises from the femur. Both parts converge to form the biceps femoris tendon, which inserts on the fibula's head. This connection is significant for knee flexion and lateral rotation of the leg.

In the context of the other options, the quadriceps tendon primarily connects the quadriceps muscles to the patella, and thus does not have a direct connection to the fibula. The sartorius muscle, which is responsible for hip flexion, abduction, and lateral rotation, does not insert on the fibula but rather attaches to the tibia. Tibialis anterior plays a crucial role in dorsiflexion of the foot and also does not connect to the fibula directly; it attaches primarily to the tibia and the foot bones.

Understanding these connections is important for recognizing how various muscles interact with the skeletal system and how they contribute to movement and stability in the lower limb.