Which of the following describes a selective intervention?

The correct answer is a skills-based program for youth from military families who have experienced many transitions because it specifically targets a particular subgroup of the population that is likely to face unique challenges. Selective interventions are designed for individuals or groups that are at a higher risk of substance abuse or related problems due to certain risk factors, such as familial instability or multiple relocations, which is often the case for military families. By focusing on this specific population, the intervention can tailor its strategies to address their distinct needs and experiences, enhancing the effectiveness of the prevention efforts.

In contrast, the other options represent more universal approaches. A classroom-based prevention program for all seventh graders is a universal intervention, as it aims to reach the entire population without consideration of specific risk factors. A parenting program open to all residents in a rural town also adopts a universal approach, catering to everyone rather than focusing on a higher-risk group. Finally, a media campaign targeting Latino youth in a big city is an example of a selective intervention in intention, but it reflects a broad demographic rather than a specific, high-risk population like military families, which limits its classification as focus on selective intervention.