Final answer:
One of the worst possible things Jeffrey can do to make Steen mad is to personally attack him, spread rumors or gossip about him, or publicly embarrass or humiliate him.
Step-by-step explanation:
One of the worst possible things Jeffrey can do to make Steen mad is to personally attack him.
This can involve saying hurtful things about Steen's appearance, abilities, or personal life.
Another thing that could make Steen mad is for Jeffrey to spread rumors or gossip about him, which can damage his reputation and relationships with others.
Lastly, if Jeffrey were to publicly embarrass or humiliate Steen, such as by making fun of him in front of others, it could also make Steen very angry.