B) Boxer supports the cause of Animal Farm; Benjamin does not.
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The answer should be C because the discouragement from whites was usual but the discouragement from her mother was disapointed because her mother should encourage her.
Answer:
The second one: You are, if I'm not mistaken, a good person for this experiment.
Explanation:
The first sentence, "You are, if I'm not mistaken a good person, for this experiment." does not have a comma after "mistaken", where there should be one. After "a good person", there should not be a comma.