Shank contains a bone known as

Options

A. Radio-ulna
B. Tibia
C. Humerus
D. Femur.

Answer

### Step-by-Step Solution:

1. **Identify the Question**: The question asks which bone is found in the shank. The shank refers to the lower leg region, specifically the area between the knee and the ankle.

2. **Understand the Options**: The options provided are:
- Radioaulna
- Tibia
- Humerus
- Femur

3. **Analyze Each Option**:
- **Radioaulna**: This is not a single bone but refers to two bones in the forearm (radius and ulna). Therefore, it is not correct.
- **Tibia**: This is one of the two main bones in the lower leg (shank). It is larger and supports most of the weight.
- **Humerus**: This is the bone of the upper arm, so it is not related to the shank.
- **Femur**: This is the thigh bone, which is above the shank and does not belong to the lower leg.

4. **Conclusion**: The correct answer is **Tibia**, as it is the primary bone found in the shank area of the leg.

### Final Answer:
The bone known to be in the shank is **Tibia**.

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