Answer:
Usted vendrá.
Explanation:
Identifying the narrator and the time that a sentence indicates is the first step that must be taken. this is very important to be able to logically conjugate the verbs, and that these have concordance with what is being expressed.
duolingo
Duolingo is a great tool to use I use it for spanish and my vocabualry has improved greatly
Ustedes salen de aqui, tu les escribes a tus abuelos. Hope this helped
I think the answer is D.