Celia is a psychologist whose job involves promoting community-wide mental health through research, prevention, education, and consultation. Celia would be a psychologist.

community psychologist

Explanation:

A community psychologist majors on the study of the interaction of the individual and the society, and their relationship, by applying several perspectives and knowledge of psychology and outside the field of psychology. A community psychologist addresses societal issues faced by social institutions, groups, organizations, and individuals in their community,

that is so