The correct option is B Chelone
Homeotherms are animals that maintain a constant body temperature. Most mammals, including humans, as well as most birds are homeotherms, while most fish, invertebrates, reptiles, and amphibians are not homeotherms as they cannot maintain a constant body temperature.
Genus Camelus - Camel (mammal)
Genus Macropus - kangaroo (mammal)
Genus Psittacula - parrot (bird)
Genus Chelone - turtle (reptile)