Which activity is an example of a public health policy intervention?

Regulating the advertising of alcohol represents a public health policy intervention because it involves the creation and enforcement of rules or guidelines aimed at influencing behavior on a population level. Such regulations are designed to reduce alcohol consumption and mitigate its associated health risks by limiting exposure to advertising, particularly among vulnerable groups such as minors. This approach is rooted in a broader strategy to protect public health and promotes healthier societal standards by addressing factors that contribute to substance use and its health implications.

In contrast, providing free vaccinations primarily serves as a public health program that directly increases access to essential preventive health services. Conducting health education workshops focuses on informing individuals and communities about health-related topics, promoting behavior change through knowledge dissemination. Establishing community gardens promotes access to healthy food but is more of a community-based initiative rather than a direct policy intervention. While all these activities contribute to public health, the regulation of advertising specifically exemplifies a strategic policy change designed to influence societal behavior.