While doing work and running, you move your organs like hands, legs, etc.
Which among the following is correct?

Options

A. Smooth muscles contract and pull the ligament to move the bones
B. Smooth muscles contract and pull the tendons to move the bones
C. Skeletal muscles contract and pull the ligament to move the bones
D. Skeletal muscles contract and pull the tendon to move the bones

Explanation

To answer the question regarding which statement is correct about the movement of organs like hands and legs during activities such as running, we can follow these steps:

### Step 1: Identify the Type of Muscles Involved
- The muscles responsible for voluntary movements like running and moving hands and legs are called **skeletal muscles**. These muscles are striated and can be controlled consciously.

### Step 2: Understand the Function of Skeletal Muscles
- Skeletal muscles contract and relax to produce movement. When these muscles contract, they pull on tendons, which in turn move the bones they are attached to.

### Step 3: Differentiate Between Muscle Types
- There are other types of muscles in the body, such as **smooth muscles** and **cardiac muscles**. Smooth muscles are involuntary and found in internal organs, while cardiac muscles are specialized for the heart. These muscles do not facilitate voluntary movements like running.

### Step 4: Analyze the Options Given
- The options provided mention smooth muscles and skeletal muscles. Since smooth muscles are not involved in voluntary movements, any option that states smooth muscles is incorrect.
- We need to focus on the options that mention skeletal muscles.

### Step 5: Evaluate the Correct Option
- Among the options that mention skeletal muscles, one option states that skeletal muscles contract to pull tendons, which then move the bones. This is the correct mechanism for voluntary movement.
- Another option incorrectly states that ligaments are pulled to move bones. Ligaments connect bones to other bones and do not facilitate muscle contraction.

### Conclusion
- The correct answer is that **skeletal muscles contract to pull tendons, which then move the bones**. This accurately describes the process of voluntary movement during activities like running.

### Final Answer
- The correct option is **D: Skeletal muscles contract to pull tendons, and bones are moved.**

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