Final answer:
The species that belong to the Ponginae subfamily from the options given is the orangutan. Gorillas, chimpanzees, and bonobos are all part of the Homininae subfamily and not Ponginae.
Step-by-step explanation:
The only species that belongs to the Ponginae subfamily from the options provided is the orangutan. Orangutans are divided into three species: Pongo pygmaeus from Borneo, Pongo abelii from Sumatra, and the recently discovered Pongo tapanuliensis from the Batang Toru forest in Sumatra. The gorilla, chimpanzee, and bonobo belong to the Homininae subfamily, not Ponginae, as part of the great ape family, Hominidae.
Gorillas include two species: G. berengei from eastern Africa and G. gorilla from western Africa. Chimpanzees and bonobos, belonging to the Pan genus, are closest to humans in terms of genetic relationship and separated by the Congo River, which acts as a geographic barrier between the two African species. The ape species collectively have complex behaviors, with some living in family groups while orangutans are generally solitary.