The chosen answer is correct because indicated strategies are specifically designed for individuals who exhibit risk factors or warning signs for a particular issue but are not yet diagnosed with that issue. These strategies focus on early intervention, aiming to reduce the likelihood of the full-blown problem developing. By targeting those at high risk, indicated strategies provide tailored interventions that can help mitigate factors that contribute to potential negative outcomes.
In comparison, universal strategies are aimed at the entire population regardless of risk, focusing on broad prevention measures. Selective strategies target individuals or groups who are at increased risk but may not yet exhibit any symptoms or problems; however, they are generally not as focused on those who are already at a high risk level without a diagnosis. Secondary strategies usually pertain to early detection and management of conditions that have already been diagnosed, so they do not align with the context of targeting those who have not yet been diagnosed. Thus, indicated strategies serve as the most effective approach for individuals at high risk but undiagnosed.