**Core Concept**
Polymerase Chain Reaction (PCR) is a widely used laboratory technique for amplifying specific DNA sequences. It involves multiple steps of denaturation, annealing, and extension to generate millions of copies of a target DNA sequence.

**Why the Correct Answer is Right**
The correct answer is the step that does not belong to the PCR process. PCR typically involves the following steps:
- Denaturation: The heat-resistant enzyme, Taq polymerase, is inactivated at high temperatures, and the double-stranded DNA is denatured into single strands.
- Annealing: The temperature is lowered to allow the primers to bind to the target DNA sequences.
- Extension: The temperature is raised to allow the Taq polymerase to synthesize new DNA strands by adding nucleotides to the primers.

**Why Each Wrong Option is Incorrect**
* **Option A:** This is a crucial step in PCR, and the correct answer is not among the options. Therefore, this option is not relevant for this question.
* **Option B:** This is also a fundamental step in the PCR process. It involves the denaturation of the DNA double helix into two single strands.
* **Option C:** This is another essential step in PCR, where the primers bind to the target DNA sequences.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that PCR is a highly sensitive technique that can amplify minute DNA sequences, making it an invaluable tool in forensic science, genetic research, and clinical diagnostics.

**Correct Answer:** None