Answer:
The correct option is: a. xero pigmentosum (XP)
Step-by-step explanation:
Nucleotide excision repair is a method to repair the damaged DNA. This method involves the removal of the DNA segment damaged by the harmful ultraviolet radiations. In this mechanism, the damaged single-stranded DNA segment is recognized and removed.
This method is used in the treatment of in-born genetic mutations of nucleotide excision repair proteins in humans.
Example: Xeroderma pigmentosum and Cockayne's syndrome