Answer:
The correct answer is - synthesizing and repairing the DNA molecules by joining nucleotides.
Explanation:
DNA polymerase is an enzyme that synthesizes the new DNA strand or molecule by joining individual free nucleotides on the sugar-phosphate backbone. It is also plays role in repairing the DNA molecules.
It is an enzyme that plays a major role in DNA replication to produce an exact copy of the original DNA molecule. The DNA polymerase also proofreads the produced DNA strand if there any error or mismatch of nucleotides present.
