When Attending an Incident with a Potential for Violence, Which

When attending an incident with a potential for violence, which of the following de-escalation strategies are most appropriate?

A) Position yourself as close to an exit as possible; utilise a loud and authoritative tone of voice to demonstrate you are in control; maintain eye contact.
B) Position yourself as close to an exit as possible; avoid eye contact with the aggressor; lower your tone and volume of speech to convey calmness.
C) Maintain non-threatening eye contact with the aggressor; lower the tone and volume of your speech to convey calmness; stand at least 1 metre from the aggressor and ask permission before taking any action that may be seen as an invasion of their personal space.
D) Maintain non-threatening eye contact; remove distractions such as bystanders from the scene; utilise a loud and authoritative tone of voice to demonstrate you are in control.