Read the following paragraph and choose the option with the set of words which would fill the blanks correctly in the given order.
During fertilization, the sperm cell from the father and the egg cell of the mother fuse to form a W which divides repeatedly to give rise to a ball of cells. The cells begin to develop into different organs and tissues. This developing structure called X gets embedded in the wall of Y. the stage of X in which all body part can be identified is called Z.
W, X, Y, Z respectively are:

Correct option is C

The correct option is (c) zygote, embryo, uterus, fetus.
Here's the explanation:
 W is the zygote, which is the single-celled organism formed when a sperm cell fertilizes an egg cell.
 X is the embryo, which is the developing organism from the time of implantation in the uterus until the eighth week of pregnancy.
 Y is the uterus, which is the muscular organ in the female reproductive system that is responsible for carrying and nurturing the developing fetus.
 Z is the fetus, which is the developing organism from the eighth week of pregnancy until birth.