De cercas sounds good with the question
Marian viste de cercas las ruinas Machu Pichu?
B. Ellos van de vacaciones a los Estados Unidos.
Ellos is the only one that means "they"
Vosotros is another way to say "you" (the alternate of tú)
Nosotros means "us"
Hope this helped!
~Just a girl in love with Shawn Mendes
Mi suegro y suegra
that's the answer