Answer: C) She didn't randomly assign participants to the experimental and control groups.
Explanation: It is necessary to randomly assign people to hot or cool units becasue if you give people a choice, they will automatically select the room with the temperature they prefer which would overthrow the point of the experiment.
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Mountains observe everything and know everthing
D is the sentence where it is used as an interjection. All the other answers use it as a pronoun.
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I believe that most people would not have agreed with Thoreau's position
About history that wasn’t written down and pass it down through poem. They sing to the men and women in the mead halls, passing down valuable information, as well as legends and providing entertainment. This probably occurs during the night hours, and possibly during some of the day hours. The main purpose of the performances is to entertain the guests at the king’s mead hall, but also to inform the guests of interesting stories. Beowulf, being there, too, was incorporated into the stories and legends. This provided more entertainment for the guests because they could physically see the man about whom he was speaking.
