The correct answer would be ensuring safety as first step.
Safety should always be the first consideration when in a crime scene, before taking any evidence, or any photos.
Once there's confirmation regarding safety of the area, they can proceed with the other protocols.
The two people discussing should participate in the conversation and acknowledge their speakers opinion, while also having a friendly posture and decent gesticulation which would increase the success of not only verbal but also non-verbal communication.
It is B. I just had this on Apex
It means to buy something
