Final answer:
PHN practice identifies at-risk populations using tailored methodologies that contemplate various factors and engage communities, rather than adopting inflexible and narrow approaches.
Step-by-step explanation:
PHN practice identifies populations of interest or populations at risk not through any single, inflexible method, but rather by utilizing a range of methodological approaches including the use of epidemiological analyses, consideration of cultural issues, and community engagement. These approaches include mixed-method research, community-based participatory research (CBPR), and data collection across the life-course. This allows for the identification of at-risk populations by understanding the community and its diverse members, accounting for factors like behaviors, environmental factors, access to resources, and more, instead of relying on a one-size-fits-all approach, individual health data, expert opinion, or ignoring the social determinants of health.