Final answer:
A phenomenological study is the qualitative research method among the options given. It is best suited for developing recommendations on how to use Evidence Based Practice to improve community outcomes, providing insights into experiences and needs of the community.
Step-by-step explanation:
The question asks which method a public health nurse should recommend as a qualitative research method to improve community outcomes using Evidence Based Practice. Among the options given, a phenomenological study is a qualitative research method. A phenomenological study is aimed at understanding the meanings of people's experiences and can provide an in-depth insight into community health phenomena. Unlike quantitative research such as randomized controlled trials and surveys, which focus on numerical data, qualitative research like phenomenological studies explores human experiences through interviews, discussions, and analysis of participants' perspective. Using a phenomenological approach could facilitate a deeper understanding of community health issues, thus aiding in the development of effective interventions tailored to the needs of the community.