Answer:
Somos-we form(nosotros/as) son-they form(ellos/as/uds)
Explanation:
1.somos
2.somos
3.son
4.son
5.son
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.