Answer:
Naturalistic Observation and Survey
Explanation:
A study on consumer behavior is intended to provide data on the real behavior of customers.
Naturalistic observation is a strategy of studies that psychologists and other social scientists frequently use. This approach focuses on the observation of an individual or subject in their natural environment.
A survey is described as a technique of study used to gather data from a predetermined group of participants in order to obtain information and perspectives on different subjects of concern.