A : Vaginal orifice is partially covered by a membrane called the hymen.
R : It is made up of thick layer of smooth muscle

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark (2)
C. If Assertion is true statement but Reason is false then mark (3)
D. If both Assertion and Reason are false statement then Mark (4)

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that the vaginal orifice is partially covered by a membrane called the hymen.
- This is true. The hymen is a thin membrane that partially covers the vaginal opening in females.

2. **Understanding the Reason (R)**:
- The reason states that the hymen is made up of a thick layer of smooth muscle.
- This is false. The hymen is primarily composed of mucosal tissue, not smooth muscle.

3. **Evaluating the Truth of Assertion and Reason**:
- Since the assertion (A) is true and the reason (R) is false, we can conclude that the correct relationship between A and R is that A is true, but R is false.

4. **Choosing the Correct Option**:
- Based on the evaluation, we can select option 3, which states that the assertion is true but the reason is false.

### Final Conclusion:
- The correct answer is that the assertion is true, but the reason is false.

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