The answer is (usted) because you dont have a personal relationship with this person.
ustedes means you guys
vosotros means all of us
tu is used for someone whom you are close with like a family member or someone whom you have know for a while.
Answer:
Nosotros barremos el suelo "we sweep the floor."
Explanation:
Prendemos would mean "we light the ground," sacuden would mean "we shake the ground," and barren is the incorect verb form. Barren is used for ustedes, and in this situation we are reffering to ourselves and not somebody else.
Answer:
-Help finding your stuff
-Make sure you have everything you need
-Help carry anything or open any doors
-Making you a snack or food
