Question

X ?Donde esta Usted___
cerca de la oficina. * What form of estar do I use

Answer 1

está

Step-by-step explanation:

Usted is equivilant to él/ella.

On the other hand, ustedes is equivilant to ellos/ellas, so that estar conjugation would be están.

You can look at it like Usted is not plural, therefore it is only one.