Question

Which of the following is not a characteristic of a mammal?

a. they have hair.
c. they have specialized teeth.
b. they are slow learners.
d. none of the above.​

Answer 1

b. they are slow learners.

Step-by-step explanation:

Mammals have hair and they have specialized teeth. Therefore, it can't be A or C or D

Leaving the answer choice B.

Answer 2

C. They are slow learners.

Step-by-step explanation:

Humans are mammals, and for the most part are pretty fast learners. Hope this helps!