Here's why:

* DNA polymerase is the enzyme responsible for synthesizing new DNA strands using an existing DNA template. This process is essential for DNA replication, ensuring that genetic information is accurately copied when cells divide.

* RNA polymerase is involved in the transcription process, where it uses DNA as a template to synthesize RNA molecules.

So, while both enzymes are crucial for cellular processes, only DNA polymerase directly participates in DNA replication.