Option 1 is not correct: The indri also called the babakoto, is one of the largest living lemurs. It is endemic to Madagascar, and it is losing its rainforest habitat for fuel, timber, and slash-and-burn agriculture. Option 2 is not correct: The elk is the second largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. Option 3 is not correct: The bonobo also historically called the pygmy chimpanzee (less often the dwarf chimpanzee or gracile chimpanzee), is an endangered great ape. The bonobo is found in a 500,000 km2 area within the Congo Basin of the Democratic Republic of the Congo (DRC), Central Africa.