42. The anterior cruciate ligament (ACL) in the knee joint is responsible for which of the following actions? a. Connecting the femur to the fibula b. Stabilizing the femur on the tibia during knee extension c. Preventing the tibia from sliding backward d. Preventing excessive external rotation of the tibia The ACL is responsible for connecting the femur to the tibia, stabilizing the femur on the tibia during knee extension, preventing the tibia from sliding forward and preventing excessive internal rotation of the tibia during walking.