Answer:
The correct answer is - Ethnography.
Step-by-step explanation:
Ethnography is a type of research method that is the study of people and their living hood or behavior in their particular setting or system or environment through using the research methods such as observation and interviewing face to face with participants.
In this given question Maria is also observing the behavior or people in lack of comprehensive healthcare in the rural town of Dakota by observing and interviewing the people who live there.