The answer is C) a mutation in his offspring
The germline mutation is heritable variation in the lineage
of germ cells. Germ cells are cells that give rise to the gametes, so a
mutation in germ cell will be seen in a sperm cell (man's gamete) but not in a body cell. If present in the sperm cell, after fertilization with an egg cell, the mutation will be present in formed zygote. So, man's offspring will have the mutation
