A nurse managing a wellness clinic counts the number of registered nurses that staff the clinic.
In this case, the nurse is evaluating:

Community health is generally rooted in the collective efforts of individuals and organizations who work to promote health within a geographically or culturally defined group.

Choice A is incorrect because population health involves understanding health outcomes and the distribution of care for a group of people, which could be defined by demographic information, specific health needs, geographic location, or other factors.

Choice C is incorrect because community health is focused on a geographically or culturally defined group rather than an at-risk group of individuals.

Choice D is incorrect because only community health is focused on a geographic area while population health can be defined by a variety of factors.

A cost-effective analysis is used to compare the costs and benefits of different programs or interventions.

In this case, the analysis would be used to determine which of the three programs to reduce infant prematurity is the least expensive while still achieving optimal health outcomes.

Choice B, evaluating the number of staff needed to implement the program, may be an important consideration in terms of resource allocation, but it does not directly address the cost-effectiveness of the program.

Choice C, evaluating which program has the strongest approval rating by the participants, may provide valuable feedback on the acceptability of the program, but it does not directly address its cost-effectiveness.

Choice D, determining which program costs the fewest dollars and uses the smallest number of staff, may provide information on resource allocation, but it does not take into account the health outcomes achieved by the program.