Assertion: Transgenic mice are beging developed for use in testing the safety of vaccines before they are used on human
Reason :They are being used to test the safety of polio vaccine.
(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 Assetion
(c) If Assertion is True but the Reason is False
(d) If both Assertion & Reason are false

Options

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

Answer

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

**Assertion:** Transgenic mice are being developed for use in testing the safety of vaccines before they are used on humans.

**Reason:** They are being used to test the safety of the polio vaccine.

### Step-by-Step Solution:

1. **Evaluate the Assertion:**
- Transgenic mice are indeed developed and used in laboratories for various testing purposes, including the safety testing of vaccines before they are administered to humans. This statement is true.

2. **Evaluate the Reason:**
- The reason states that transgenic mice are being used to test the safety of the polio vaccine. This is also true, as transgenic mice can be utilized in vaccine safety testing, including for polio.

3. **Determine the Relationship:**
- While both the assertion and the reason are true, we need to assess whether the reason correctly explains the assertion. The assertion discusses the general use of transgenic mice for vaccine testing, while the reason specifically mentions the polio vaccine. The reason does not explain the assertion as a whole; it only provides an example.

4. **Conclusion:**
- Since both the assertion and the reason are true, but the reason does not serve as a correct explanation for the assertion, the correct answer is (b): If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

### Final Answer:
(b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

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