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...

○ ovoviviparous

○ placental mammals

○ marsupials

○ none of the choices are accurate

Explanation:

1. Ovoviviparous: Organisms that retain eggs inside the body and give birth to live young, but horses and cows don't reproduce this way.
2. Placental mammals: These mammals have a placenta that nourishes the fetus during gestation. Horses and cows are placental mammals, and their large size can make birth risky due to the size of the offspring.
3. Marsupials: Give birth to underdeveloped young that mature in a pouch (e.g., kangaroos), which is not the case for horses and cows.
4. None of the choices: Incorrect, as placental mammals is accurate.

Answer:

B. placental mammals