Anyone hiking the Appalachian Trail should remember to bring his or her rain gear.
Pretty sure it’s D. Could be B though
If Victor knows French then yes there is not conflict unless you count his crush as one, but if he doesn't know French then the conflict is still there because he still has to help Teresa on knowledge he doesn't know himself.
Nendo is basically Saiki's sidekick. He's not very smart, and he thinks Saiki is his best friend, even though Saiki doesn't like him. Saiki also can't read Nendo's mind. I belive yare yare means "Oh my," or something along those lines.