Which of the following is NOT a key element of host responsibility?

The correct answer highlights an essential aspect of host responsibility, which is aimed at providing a safe and enjoyable environment for patrons. Promotion of heavy drinking goes against the principles of responsible service. Effective host responsibility fosters a culture of moderation, ensuring that guests drink safely and within their limits.

Responsible service and promotion, transport options, and food availability are all critical components of promoting a responsible drinking culture. These elements help to mitigate risks associated with alcohol consumption, such as over-intoxication and impaired driving. Offering transport options ensures guests have safe ways to get home, while providing food helps to slow the absorption of alcohol into the bloodstream, promoting more thoughtful drinking choices.

In contrast, promoting heavy drinking would not only disregard these responsibilities but also pose significant risks to the health and safety of patrons, potentially leading to negative outcomes for both guests and the establishment. Therefore, it's clear why promotion of heavy drinking is not a key element of host responsibility.