Final answer:
The large medial bone of the leg above the knee is the femur, which is the strongest and longest bone in the body, forming part of the knee joint along with the tibia and patella.
Step-by-step explanation:
The large medial bone of the leg above the knee is the femur, which is option c) in the multiple-choice question provided. The tibia is the second largest bone in the human body and it is located directly below the knee, articulating with the femur at its proximal end. The femur, being the longest, heaviest, and strongest bone in the body, forms the knee joint in conjunction with the tibia and patella. The patella, or kneecap, is positioned anterior to the knee joint and is not a weight-bearing bone like the tibia or femur.