Ahuman cell that contains all of the information necessary for the growth and development of a complete organism is(1)a sperm cell(2)a gamete(3)a zygote(4)an egg cell

It is the zygote it says that one sperm enters ovum leaving tail it develops a fertilization membrane the nuclei of the sperm and ovum fuse to form to form a zygote the zygote divdies repeatedly mitosis to formball of cells goes down oviduct and sinks into the uterus lining the ball of cell divide into two parts the embryo and placenta join the umbilical cord...

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.