You would use ser because it is talking about their occupation
You probably need to conjugate 'esquiar' to ustedes form but that depends on the form you guys are in like: Present or Past Pogressive, Preterite...etc.
Answer:
d. ser is used tl describe location
im native spanish speaker ser is like being or you are it depends on the sentence but in this case you cannot talk of a location with the word Ser
yo estoy = I am
Tu estas = you are
El esta = He is
Ella esta = she is
Tu estas = you are
Nosotros Estamos = we are
Ellos estan = they are
Ustedes estan = you all are
1 = esta
2 = esta
3 = estoy
4 = estan
5 = estamos
6 = este
7 = estan
8 = esta
9 = estas
10 = esta
quien is singular and quienes is plural (sorry i didn’t spell it right i couldn’t figure out how to place accents)
