The thigh bone, which is the longest bone in the body.

The thigh bone, which is the longest bone in the body.

• A. Tibia
• B. Fibula
• C. Pelvis
• D. Femur

Answer: (D)

The thigh bone, the longest bone in the body, is the femur. It runs from the hip to the knee and is built to bear most of your body weight while acting as a powerful lever for movement. Because of its length and strength, the femur can handle large forces during walking, running, and jumping. The other bones listed are in different regions: the tibia is in the lower leg (the shin) and is long and weight-bearing but shorter than the femur; the fibula runs parallel to the tibia and is thinner, mainly for muscle attachment and ankle stability; the pelvis is a group of bones forming the hip region, not a single long bone. So the thigh bone is the longest because of its location and crucial role in supporting and moving the body.

The thigh bone, the longest bone in the body, is the femur. It runs from the hip to the knee and is built to bear most of your body weight while acting as a powerful lever for movement. Because of its length and strength, the femur can handle large forces during walking, running, and jumping. The other bones listed are in different regions: the tibia is in the lower leg (the shin) and is long and weight-bearing but shorter than the femur; the fibula runs parallel to the tibia and is thinner, mainly for muscle attachment and ankle stability; the pelvis is a group of bones forming the hip region, not a single long bone. So the thigh bone is the longest because of its location and crucial role in supporting and moving the body.