Assertion : From day 10 to 17 of the mentrual cycle is called fertile period.
Reason : As chances of fertilisation are very high during this period.

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

To analyze the assertion and reason provided in the question, we will break it down step by step.

### Step 1: Understand the Assertion
The assertion states that "From day 10 to 17 of the menstrual cycle is called the fertile period."
- The menstrual cycle typically lasts about 28 days, and the fertile period is indeed around the time of ovulation, which occurs approximately in the middle of the cycle.

### Step 2: Understand the Reason
The reason states that "As chances of fertilization are very high during this period."
- This is true because the fertile period coincides with ovulation, when an egg is released and can be fertilized by sperm. The days leading up to and immediately following ovulation are the most fertile.

### Step 3: Evaluate the Relationship Between Assertion and Reason
Now, we need to determine if both the assertion and the reason are true and if the reason correctly explains the assertion.
- Both the assertion and the reason are true.
- The reason correctly explains why the period from day 10 to 17 is considered the fertile period, as this is when the chances of fertilization are indeed high due to the timing of ovulation.

### Conclusion
Since both the assertion and reason are true, and the reason provides a correct explanation for the assertion, the answer is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

### Final Answer
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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