It means out of all people why does Romeo have to be a Montague
them is being used to tell all the people she showed her coin collection to. Instead of writing all of the names of the people she showed, she used the pronoun 'them' to acknowledge them all.
Your answer is C the other answers does not makes any sense
Answer: Personal
Explanation: The personal function of language is used to express feelings and opinion and that's what Sally did.
That the person is nervous, restless and is probably uncomfortable. I think the tone would be tense and maybe a little agitated? the person is probably worried about something. sorry if this isn't what you needed but I hope it helps :)