A is wrong because it’s a statement.
B is the answer because it asks “why haven’t you” & that’s the example.
C is another statement
D is a demand, not a bandwagon fallacy
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.
Hope this helps! :)
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