All the given three options apply.
Gnathostomes are jawed vertebrates. Most of the living vertebrates are gnathostomes, as they have opposing jaws with teeth.
Amniotes are organisms who bear their fetus in a membrane called amnion. Development of amnion and other membranes that surround the embryo is an adaptation to terrestrial live.
The hominins include all the zoological tribes of the family Hominidae under the order Primates. Mostly the term is used to refer extinct members of the human lineage.