Answer:
They have tissues, organs, and organ systems.
Explanation:
While all animals are multicellular, heterotrophic, eukaryotic and ingest their food, not all animals have tissues, organs, and organ system.
The simplest group of animals, the sponges, are made up of several cells that have minimal interaction with one another. Hence, while sponges are multicellular, they are not at tissue level of body organization.
All the options are true for all animals except the last option.
