Here's why:

* DNA polymerase is responsible for synthesizing new DNA strands, using the existing strands as templates. It reads the template strand and adds complementary nucleotides to the new strand, ensuring accurate replication.

* There are different types of DNA polymerase involved in different stages of replication:

* DNA polymerase III is the primary polymerase responsible for the majority of DNA synthesis.

* DNA polymerase I is involved in removing RNA primers and filling in the gaps between Okazaki fragments on the lagging strand.

* DNA polymerase II is involved in DNA repair.

While other enzymes play important roles in replication (like helicase, primase, ligase, etc.), DNA polymerase is the crucial enzyme that carries out the core process of adding nucleotides and creating the new DNA strands.