Answer:
Forming a testable hypothesis
Explanation:
Hypothesis can be defined as an answer to a scientific test.
Testable Hypothesis is the stage in the scientific method in which testing and data collection is done and based on these data, a hypothesis is either proved or disproved.
In the given case, the stage at which the person will be at when he/she predicts violent behavior caused by drinking habit is "Forming a testable hypothesis". The person will collect data on the violent behaviors of sportsmen during a sporting event and analysis if they have drinking habits or not. And based on the collected data will either prove or disprove with the given hypothesis.
