Final answer:
The first step in the five-step model of bystander intervention is to assess the situation.
Step-by-step explanation:
The first thing you must do as a potential helper, according to the five-step model of bystander intervention, is Assess the situation. This involves quickly analyzing the problem and identifying what information is given. By assessing the situation, you can gather the necessary information to determine the appropriate course of action in a potential emergency or situation where help is needed.