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.
Answer:
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In the lower left corner of napoleon crossing the saint-bernard, the artist included the names of generals who crossed the alps into italy: napoleon, hannibal, and Karolus Magnus.
A person who is creating art, practicing the arts, or exhibiting an art is considered to be an artist. The typical usage in both casual speech and scholarly discourse solely refers to a visual arts practitioner. But the phrase is also frequently used in the entertainment industry, particularly in a professional setting, for musicians and other performers (although less often for actors).
The English equivalent of the French word for artist is "artiste," however usage of this word in this context is now uncommon. It is acceptable to refer to authors as "artists," but this usage is uncommon and mostly limited to critical situations.
Learn more about artist here:
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The main idea of the Mahabharata is to do good things to get a better karma.
This is an example of negative reinforcement.
Her mother scolded her every time Jane bit her nails - so Jane learned that every time she bites her nails, she is going to be scolded sternly by her mother. In order to avoid that, she stopped biting her nails, and thus the reinforcement was successful.
