Maybe because of the different cultures and art tendencies that had to have varied in different regions of Greece?
I believe the answer is:
random sample of the town's population
A mix of participants that reflect your town's makeup
Random sample is needed in order to ensure that the researchers do not obtain only the subjects that is close to them. Mix of participants is needed in order to ensure that the sample population are not taken from group with close similarties in behaviour.
Answer:
The governor shall appoint
Answer:a. increased; remained almost unchanged.
Explanation: