Fact 1: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. Fact 2: Sperm and eggs are cells known as gametes. Given the two facts above, what occurs when gametes fuse to form a diploid zygote?

Select from the following. a). permineralization; b). rapid expansion; c). competition; d). fertilization; e). photosynthesis; f). chromosomes; g). mutation; h). Leptospirosis;
The answer is:
d).