Function of long bones in adult mammals is to provide :-

Options

A. (1) support only
B. (2) support and produce RBCs only
C. (3) support and produce WBCs only
D. 4) support and produce RBCs and WBCs

Answer

### Step-by-Step Solution:

1. **Identify the Question**: The question asks about the functions of long bones in adult mammals.

2. **Define Long Bones**: Long bones are characterized by their length, with a shaft and two ends. Examples include the femur (thigh bone), humerus (upper arm bone), and tibia (shin bone).

3. **Functions of Long Bones**:
- **Support**: Long bones provide structural support to the body, allowing it to maintain its shape and posture.
- **Mobility**: They facilitate movement by serving as levers that muscles can pull on.
- **Strength**: Long bones are dense and strong, which helps withstand the forces exerted on them during activities like walking, running, and jumping.

4. **Location of Long Bones**: Long bones are primarily found in the upper and lower extremities of mammals, such as the arms and legs.

5. **Conclusion**: Based on the functions discussed, the primary function of long bones in adult mammals is to provide support to the body.

6. **Correct Answer**: The correct answer to the question is option 1, which states that long bones provide support.