Researchers studying about ancient groups would look at their culture, traditional economy and irrigation methods used by the farmers.
Answer:
Quota sampling
Explanation:
Quota sampling: It gathers representative data from a particular group of people. In this sampling method, the data is being chosen from a particular sub-group of a population. This is considered to be more reliable as compared to other non-probability sampling methods such as snowball sampling.
Example: A researcher can take 200 males participants between the age of 18-25.
In the given question, the graph represents the quota sampling method.
Articles of Confederation
I believe
Either C) Less flooding or B) loss of habitat
