Assertion: Polymerase chain reaction is nick named as people's choice reaction
Reason :This technique is used to amplify a specific desired DNA fragment

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

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "Polymerase chain reaction is nicknamed as people's choice reaction." We need to evaluate whether this statement is true or false.

2. **Understanding the Reason**: The reason given is that "This technique is used to amplify a specific desired DNA fragment." We need to determine if this statement is true and if it supports the assertion.

3. **Evaluating the Assertion**: The Polymerase Chain Reaction (PCR) is indeed widely known and often referred to as the "people's choice reaction." This nickname reflects its popularity and versatility among scientists for amplifying DNA. Thus, the assertion is **true**.

4. **Evaluating the Reason**: The PCR technique is specifically designed to amplify a particular DNA fragment, which is crucial for various applications in genetics, forensics, and medical diagnostics. Therefore, the reason is also **true**.

5. **Connecting the Assertion and Reason**: The reason explains why PCR is called the "people's choice reaction." Since it allows scientists to amplify the DNA of their choice, it justifies the nickname. Therefore, the reason correctly explains the assertion.

6. **Conclusion**: Both the assertion and the reason are true, and the reason correctly explains the assertion.

### Final Answer:
- Both the assertion and the reason are true. The reason correctly explains why PCR is nicknamed the "people's choice reaction."

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