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.
The Maya adapted to the environment by having deer and monkeys as food. Trees and other plants were also good building materials. The Maya built structures such as large public meeting spaces, canals to control the flow of water, and fashioned nearby hills into flat terraces on which peasants could farm.
Answer: D
Explanation:
Because the A,B,C dont make sense the president is the one that is the chief executive in our country then that means that the senate would have to go through the voting process it even says it in the news paper (49-35) that’s a senate vote
