Police is the correct answer. It could be any of these actually but the most reasonable is the number C.
Answer:
1. Ser - to be (permanent)
Yo soy
Tu eres
Él es
Ella es
Nosotros somos
Ustedes son
Ellos son
Ellas son
2. You would use the verb <em>ser</em><em> </em>when referring to or talking about something that's permanent such as the position, the location, action, condition or the emotion of someone or something.
