Which of the Following Characteristics is Common to All Known

Question

Which of the following characteristics is common to all known animals?
A) Animals are unicellular.
B) Animals are multicellular.
C) Animals are autotrophic.
D) Animals have cell walls.

Accepted Answer

Animals are multicellular, meaning they are made up of more than one cell, distinguishing them from unicellular organisms. Unlike plants and some bacteria, animals cannot produce their own food (autotrophic) and do not have cell walls.