One of the major insect enemy of honey bee is

Answer: Option B

One of the major insect enemies of honey bees is Galleria mellonella.
The greater wax moth, Galleria mellonella Linnaeus, is a ubiquitous pest of the honeybee, Apis mellifera Linnaeus and Apis cerana Fabricius.
The greater wax moth larvae burrow into the edge of unsealed cells with pollen, bee brood, and honey through to the midrib of honeybee comb.