Final answer:
The assertion that humans are primates, hominids, and hominins is true, as humans are part of these biological classifications within the order of Primates.
Step-by-step explanation:
The statement Humans are primates, hominids, and hominins are true. Within the order of Primates, humans belong to the family called Hominidae, making them hominids along with the great apes such as chimpanzees, gorillas, and orangutans. Further refining this classification, the term hominin refers to the group representing modern humans, extinct human species, and all of humanity's immediate ancestors, including genera such as Homo, Australopithecus, Paranthropus, and Ardipithecus. Therefore, humans, as part of the genus Homo, are not only primates and hominids but also hominins, sharing a common ancestor with the great apes and evolving characteristics such as bipedal locomotion and larger brain sizes.