The longest bone of the human body is

Options

A. tibia
B. incus
C. femur
D. vertebra

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the longest bone in the human body.

2. **Reviewing the Options**: The options provided are:
- Option 1: Tibia
- Option 2: Incus
- Option 3: Femur
- Option 4: Vertebra

3. **Analyzing Each Option**:
- **Tibia**: This bone is located in the lower leg (shin area). While it is a long bone, it is not the longest bone in the body.
- **Incus**: This is one of the three tiny bones in the ear (ossicles). Since it is very small, it cannot be the longest bone.
- **Vertebra**: The vertebrae are the bones that make up the spine. Although they run from the neck to the lower back, individual vertebrae are relatively small and cannot be considered the longest bone.
- **Femur**: The femur is located in the thigh and is known to be the longest and strongest bone in the human body. It connects to the hip at the acetabulum and forms the knee joint with the tibia.

4. **Conclusion**: After evaluating all the options, the femur is identified as the longest bone in the human body.

5. **Final Answer**: The longest bone of the human body is the **femur**.

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