The correct answer is D. Not the same
Step-by-step explanation:
In biology, the gestation period refers to the time an embryo develops inside of the uterus it before it can be born or the amount of time between conception and birth. This concept applies to viviparous animals and mainly to mammals; in this case, the gestation period varies according to the species, for example, the gestation period of a cow is around 9 months, the one of a leopard is around 3 months and the one of an elephant is around 22 months. This means the gestation period of all mammals varies and is not the same but is determined according to the species.