Answer:
ethnography
Explanation:
A(n) ethnography enables a researcher to test a hypothesis under highly controlled conditions established by the investigator.
Ethnography is a research that study people based on the face to face interviewing, observation and daily life activity on social media. Observation are done on highly controlled environment. This research is important to understand the consequences of the decision that people make on daily life. This method was first developed by anthropologist Bronislaw Malinowski.