A DNA repair mechanism that involves removing a single damaged base by DNA glycosylase, followed by AP endonuclease and DNA polymerase I filling the gap, is known as which of the following?

✓ Correct Answer: Option B

Base Excision Repair (BER) is responsible for repairing single damaged bases (e.g., deamination, oxidation). It involves DNA glycosylase removing the base, creating an AP site, which is then processed by AP endonuclease and DNA polymerase.