Catherine is working on a study of different groups of animals. In which group would she find the most diversity?

A. Omnivores

B. Carnivores

C. Mammals

D. Invertebrates

E. Vertebrates

The correct answer is option D

The invertebrates have the most diverse group of animals. They neither posses nor develop vertebral column. This includes all the animals excluding the subphylum vertebrae.

The majority of animal species are invertebrates say approximately 97% of the total animals present on earth belongs to the group of invertebrates.

Example: Arthopods, mollusks, crustaceans, annelids et cetera.

its C, mammals ...