Question

multiple choice question
what mammal group is currently the most diverse and is also called the eutherians?
nonavian reptiles
monotremes
marsupials
placentals

Explanation:

Placentals, also known as eutherians, are the most diverse group of mammals. Monotremes are egg - laying mammals (e.g., platypus), marsupials have a pouch (e.g., kangaroo), and nonavian reptiles are not mammals.

Answer:

placental