Answer:
The correct answer would be fertilization.
Explanation:
Human fertilization takes place in the ampulla of the fallopian tube. The fertilization process involves the union of a human egg (ovum) and sperm which results in the zygote formation.
In this process, the sperm burrows into the zona pellucida to reach the outer membrane of the egg and fuse there for zygote formation.
Thus, the correct answer is Fertilization.
