6. which of the following is a prerequisite for an undercover role-play
a. cover story
b. vehicle
c. tools of communication
d. support officer

7. trust between is crucial for a successful undercover operation
a. the undercover officer and the support officer
b. the undercover officer and the suspect
c. the suspect and the support officer
d. the informant and the support officer

8. when an officer watches from a stationary vantage pointe such as a camouflage outdoor fixture or room it is known as
a. foot surveillance
b. fixed surveillance
c. one man surveillance
d. two man surveillance

9. introduction, acceptance, buy, arrest, covering of the informant, and after actions are common steps of
a. an undercover operation
b. a surveillance
c. a criminal investigation
d. criminal intelligence

6. I think C. Tools of communication  is correct option. As it's necessary to have tools of communication. The main goal of undercover role-play is to gain information. It's impossible without tools of communication.

7. I'm 100% sure that correct answer is: Trust between B. The undercover officer and the suspect is crucial for a successful undercover operation. As I've mentioned it before, undercover role-play is needed to gain useful information. To get the information, there should be trust between suspect and undercover officer.

8. As far as I remember, the answer is: When an officer watches from a stationary vantage point such as a camouflage outdoor fixture or room it is known as B. Fixed surveillance. The officer stays static during whole surveillance.

9. I'm definitely sure that this is the  Introduction, acceptance, buy, arrest, covering of the informant, and after actions are common steps of C. A criminal investigation. I think there's nothing to explain, as the given steps are all part of criminal investigation.

Is this english or something else