Answer:
Community
Step-by-step explanation:
Community psychology is defined as one of the branches of psychology that encompass the study of a different person related to his or her community and therefore the ultimate effect of a particular community on these people.
Community psychologist is considered as those who practice in the field of community psychology and is responsible for researching on undesirable, problematic-situation, and unpleasant situations that can affect a person in a specific community and eventually help those people to make various improvements.