Answer:
Knee.
Explanation:
Knee joins the legs with the thighs. Knee consists of patellofemoral joint and tibiofemoral joint. Knee helps in the process of extension and flexion.
Cruciate ligamnets stabilize the knee structure. The anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) are the intracapsular ligaments of knee.
Thus, the correct answer is option (b).
