Question

The class mammalia contains the only animals that _____.

Answer 1

Have mammary glands - GradPoint answer (you can do this)

Answer 2

Answer: The correct answer for the blank is-

The class mammalia contains the only animals that have mammary glands.

Explanation:

Mammalia is considered as class of  higher vertebrates (such as , marsupials, placentals, or monotremes) that provide nourishment to their offspring through mammary glands, which secrete milk.

They are warm blooded organisms and their skin is usually covered with more or less hairs.

Example- Human beings.