Which subject pronoun is used to talk a police officer in spanish?

The subject pronoun used to talk to a police officer in Spanish is "usted".

Here's why:

* "Usted" is the formal "you" in Spanish, used for showing respect to someone you don't know well, someone older than you, or someone in a position of authority.

* Police officers are considered figures of authority, so you would use "usted" when addressing them.

Example:

* "Usted" puede ayudarme, por favor. (You can help me, please.)

* "¿Usted" sabe dónde está el banco? (Do you know where the bank is?)