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.
I think it’s the third one
Answer:
A: en el ensalada
Explanation:
you put tomatoes and the rest of the veggies in the salad
tu pones los tomates en el ensalada y tambien el pollo
if this is what you wanted then your welcome XD
if not then, that's how smart i am lol