I believe the answer would be "C. You should not use the article as a reference. The lack of corroboration and outdated information outweigh the author's credentials."
Answer: could you specify
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Explanation:
Cause and effect would be the relationship occurring in this situation.
Answer:
Remove: "She voices some concerns about leaving Perkins."
Explanation: Reading through the text, I mentally removed each sentence. Only "She voices some concerns about leaving Perkins." makes the summary better when it rid of. The others do not make much sense removed. (Hope this helps)