The correct option is B No separation of useful gene combination
Organisms produced via parthenogenesis have genetic material that comes from one individual or parent only instead of a combination of two. They have the benefit of genetic stability. There is no separation of useful gene combination.
Germplasm conservation is a successful method to conserve the genetic traits of endangered and valuable species and the species can be generated whenever required in future even. It helps to prevent the complete wipe out of species.