Which of the following system is found attached to the bone and helps us in moving about and in doing different kinds of work?

Options

A. Muscular system
B. Circulatory system
C. Respiratory system
D. Nervous system

Answer

To answer the question about which system is found attached to the bones and helps us in moving about and doing different kinds of work, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Systems**: We need to consider the different systems in the body that are involved in movement. The main systems to think about are the muscular system, circulatory system, respiratory system, and nervous system.

2. **Understand the Muscular System**: The muscular system consists of muscles that are attached to the bones. These muscles work by contracting and relaxing, which allows us to move our body parts.

3. **Evaluate Other Systems**:
- **Circulatory System**: This system involves the heart and blood vessels, which are responsible for pumping blood throughout the body. It does not directly help in movement.
- **Respiratory System**: This system includes the lungs and is responsible for gas exchange (breathing). It also does not aid in movement.
- **Nervous System**: This system transmits signals from the brain to different parts of the body, but it does not directly cause movement.

4. **Conclude**: Since the muscular system is the one that is attached to the bones and is responsible for movement through muscle contractions, it is the correct answer to the question.

### Final Answer:
The system that is found attached to the bones and helps us in moving about and in doing different kinds of work is the **muscular system**.

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