Which is longest bone of the body?

Options

A. Vertebrae
B. Skull bone
C. Femur
D. Steppes

Explanation

**Step-by-Step Solution:**

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

2. **Consider the Options**: The options provided are:
- Option 1: Vertebrae
- Option 2: Skull bone
- Option 3: Femur
- Option 4: Stapes

3. **Evaluate Each Option**:
- **Vertebrae**: These are the bones that make up the spine, but they are not the longest bones in the body.
- **Skull Bone**: While the skull is made up of several bones, none of them are the longest.
- **Femur**: This is commonly known as the thigh bone and is recognized as the longest bone in the human body.
- **Stapes**: This is the smallest bone in the body, located in the ear, which makes it an incorrect choice for the longest bone.

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

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

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