Answer:
<em><u>Naturalistic Observation</u></em> and <em><u>Survey</u></em>
Explanation:
A study on consumer behavior is intended to provide data on the real behavior of customers.
Naturalistic observation <em>is a strategy of studies that psychologists and other social scientists frequently use.</em> This approach focuses on the observation of an individual or subject in their natural environment.
A survey is described as a technique of study <em>used to gather data from a predetermined group of participants in order to obtain information and perspectives on different subjects of concern.</em>
Taxation is one economic policy
Ancient civilizations were built along rivers because the land was fertile.
