Poets who idealized natural landscapes and the rural lifestyle were known as pastoral poets
I'd say D because I think I remember that being a big part of citing works. A could be correct too. I'd look up maybe basic MLA rules and see which ones comes up first. It kinda depends on what your teach emphasizes. Though I'm pretty confident it isn't B or C
Imply is the best answer I guess
Human being, because a human being walks on all fours in early life, on two legs as an adult and with a walking stick in old age.
I hope this helps you.