Assertion`:-` Voluntary muscles is controlled by will power.
Reason `:-` It is syncytial and myofibril arranged in special pattern .

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "Voluntary muscles are controlled by willpower."
- **Explanation**: Voluntary muscles, such as those in the arms and legs, are indeed under conscious control. This means that we can decide when to move them, which is a characteristic of voluntary muscles.

2. **Understanding the Reason**: The reason states that "It is syncytial and myofibrils are arranged in a special pattern."
- **Explanation**: Voluntary muscles, specifically skeletal muscles, are multinucleated (syncytial) and have myofibrils arranged in a specific pattern that allows for contraction and movement. This is a structural characteristic of these muscles.

3. **Evaluating the Relationship**: Now we need to determine if the reason provided is a correct explanation of the assertion.
- **Analysis**: While both statements are true, the reason does not explain why voluntary muscles are controlled by willpower. The control of voluntary muscles by willpower is a function of the nervous system, not merely their structural characteristics.

4. **Conclusion**:
- The assertion is true: Voluntary muscles are controlled by willpower.
- The reason is also true: They are syncytial and have myofibrils arranged in a special pattern.
- However, the reason is not a correct explanation of the assertion.

5. **Final Answer**: Both the assertion and reason are true, but the reason is not a correct explanation of the assertion.