The correct option is D Advanced ex-situ conservation of biodiversity.
In situ conservation refers to the continuous use of the animal under its natural environment. Ex situ in - vivo conservation is when live animal population are kept outside of their normal environment or not kept under normal management condition (e.g., zoological parks or government farms). Ex situ in vitro conservation is external to the living animal in an artificial environment, under cryogenic conditions including the cryoconservation of embryos, semen, oocytes, somatic cells or tissues having the potential to reconstitute live animals in the future. Ex situ in vitro conservation can also be called as advanced ex-situ conservation.