Assertion : Non-striated muscles are said to be voluntary in nature.
Reason : Non-striated muscles can be moved according to will.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

To solve the question, we need to analyze the assertion and the reason provided:

**Assertion:** Non-striated muscles are said to be voluntary in nature.
**Reason:** Non-striated muscles can be moved according to will.

### Step-by-Step Solution:

1. **Understanding Muscle Types:**
- There are three types of muscles in the human body: striated (skeletal) muscles, non-striated (smooth) muscles, and cardiac muscles.
- Striated muscles are voluntary, meaning they can be controlled by our will (e.g., moving our arms).
- Non-striated muscles are involuntary, meaning they function automatically without conscious control (e.g., muscles in the digestive tract).

2. **Analyzing the Assertion:**
- The assertion states that non-striated muscles are voluntary. This is incorrect because non-striated muscles are actually involuntary.

3. **Analyzing the Reason:**
- The reason claims that non-striated muscles can be moved according to will. This is also incorrect because non-striated muscles cannot be controlled by will.

4. **Conclusion:**
- Since both the assertion and the reason are false, the correct answer is option D: both assertion and reason are false.

### Final Answer:
Both assertion and reason are false.

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