The correct option is B In-vitro
In vitro fertilization (IVF) is a process by which an egg is fertilized by sperm outside the body in a test tube. The process involves monitoring and stimulating a woman's ovulatory process, removing ovum from the woman's ovaries and letting sperm fertilize them in a liquid in a laboratory. The fertilized egg (zygote) is cultured in a growth medium and is then implanted in the same or another woman's uterus, with the intention of establishing a successful pregnancy. Thus, the correct answer is option B.