What must an adult do if they are aware of illegal possession or consumption at their open house party?

An adult who is hosting an open house party has a responsibility to ensure the safety and legality of the event, particularly if they are aware of illegal activities such as possession or consumption of controlled substances, alcohol by minors, or any other unlawful actions. Taking reasonable action to stop illegal possession or consumption demonstrates a commitment to responsible hosting and compliance with the law.

This may involve directly addressing the individuals involved, removing illegal items, or possibly asking guests to leave if they refuse to comply with the legal expectations. The act of intervening or attempting to address the situation in a responsible manner can help mitigate potential dangers, legal repercussions, and liability associated with the actions of guests at the party.

The other options, such as ignoring the situation, simply informing guests about the law without taking any action, or delegating responsibility to others, do not fulfill the legal or ethical obligations of a party host. Ignoring illegal activity could lead to serious consequences, both legally and in terms of safety.