The correct option is B recovery of interspecific hybrids
The excision of young embryos from developing seeds and their cultivation on a nutrient medium is called as embryo culture. In case of some interspecific crosses, where the embryos die at a very young stage, embryos are excised and cultured in vitro to have hybrid plants.
Embryo culture is also useful in plants where seeds have no stored food material. Embryos of dormant seeds could also be revived by embryo culture.