Which of the following best describes mammals?

Question

1)A family of animals that breathe air
2)An order of animals that share many similar characteristics
3)A species of animals that can all mate with one another
4)A kingdom of the largest animals on earth

Answer 1

The best description of mammals from the given options is:

2. An order of animals that share many similar characteristics.

Mammals are a class of animals (Mammalia) characterized by features such as the presence of mammary glands, hair or fur, and a unique structure of the middle ear. They are not just a family, a species, or a kingdom, and they include a wide variety of animals, not exclusively the largest ones.