Final answer:
The level of practice of a social marketing campaign aimed at preventing d-r-u-n-k driving in a community demonstrates community level practice, as it focuses on changing collective behavior rather than individual behavior or government policy(option c).
Step-by-step explanation:
A social marketing campaign urging community members to avoid driving motorized vehicles after consuming alcohol is being implemented in a local community. The level of practice being demonstrated here is c)community.
This designation fits because the campaign is focused on influencing collective behavior and norms rather than targeting only individual behavior change, engaging with systems or processes, or involving government policy-making directly. However, such campaigns can be part of broader public health strategies that may involve all these elements over time. Social marketing campaigns such as this one aim to change behavior by appealing to shared values and community norms, often employing tactics like public service announcements, events, and educational programs to raise awareness and alter public attitudes.