Q: Fact 1: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. Fact 2: Sexual reproduction requires formation of gametes, followed by fertilization. Given the two facts above, what involves a sperm and egg fusing to form a diploid zygote?

Possible answers:
a). Leptospirosis
b). produce offspring
c). allow growth
d). sexual reproduction
e). metabolic reaction
f). peachleaf willow
g). rapid expansion
h). Plant reproduction
The answer is:
d).