Assertion : Ovulation occurs on the `14^(th)` day of menstrual cycle in a human female .
Reason : The high level of estrogen is controlled 2 or 3 days before this event due to negative feed back.

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 ovulation occurs on the 14th day of the menstrual cycle in a human female.
- The menstrual cycle typically lasts about 28 days, and ovulation generally occurs around the midpoint, which is approximately the 14th day.

2. **Understanding the Reason:**
- The reason given is that the high level of estrogen is controlled 2 or 3 days before ovulation due to negative feedback.
- In the menstrual cycle, estrogen levels rise leading up to ovulation, but the assertion suggests that this control is due to negative feedback, which is not accurate.

3. **Evaluating the Truth of the Assertion:**
- The assertion is true. Ovulation does typically occur around the 14th day of a 28-day menstrual cycle.

4. **Evaluating the Truth of the Reason:**
- The reason is false. While estrogen levels do rise before ovulation, they are not controlled by negative feedback in the manner described. Instead, the rise in estrogen is part of the positive feedback mechanism that triggers ovulation.

5. **Conclusion:**
- Since the assertion is true and the reason is false, the correct answer is option C: "Assertion is true but the reason is false."

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