Question

large mammals such as horses and cows are at risk of death when delivering offspring because they are so large. these mammals are best classified as...

none of the choices are accurate

ovoviviparous

placental mammals

marsupials

Explanation:

To solve this, we analyze each option:

1. Ovoviviparous: These animals have eggs that develop inside the mother, and the young are born live, but this is not the case for horses and cows. Examples include some sharks.
2. Placental mammals: Horses and cows are placental mammals. Placental mammals have a placenta that nourishes the fetus during gestation, and they typically have a longer gestation period. Large mammals like horses and cows fall into this category, and their large size can make delivery risky.
3. Marsupials: Marsupials give birth to underdeveloped young that continue developing in a pouch (e.g., kangaroos). Horses and cows are not marsupials.
4. None of the choices: Since horses and cows are placental mammals, this is incorrect.

Answer:

C. placental mammals