B. germany
Germany was the scapegoat for WW1
Can you please explain what you are supposed to do
An expense that changes
The price varies
Answer:The Answer is A.
Explanation: I found it on this site http://cyborganthropology.com/Domestic-Public_Dichotomy
Answer: alternative D.
Explanation: Dr. DeVries should choose his sample population randomly in order for his research to be representative, even having a specific population, which is high school seniors, that he wants to study. By <u>choosing specifically students from an exclusive college preparatory school, he isn't considering how students from other schools might perform in his research test</u>. This would be a very important step for him to understand how the practice in problem solving affects the ability related to it. Otherwise, he will have a distorted result.