The joining of nuclei and chromosome is known as fertilization.
In vitro fertilization (IVF) is a process by which egg cells
are fertilized by sperm outside the womb, in vitro.
The correct answer between all the choices given is the
second choice or letter B. I am hoping that this answer has satisfied your
query and it will be able to help you in your endeavor, and if you would like,
feel free to ask another question.
