"Professional" is one word that could fit this blank.
The question is incomplete and the full version can be found online.
Answer: A “These correlational findings do not prove that lack of sleep is causing these problems."
Explanation:
To answer this question, one must first read "Teenagers Who Don’t Get Enough Sleep at Higher Risk for Mental Health Problems" (2015) by Tori Rodriguez. Then, answer the first part of the question, which asks: " Which statement best describes how the author addresses the conflicting evidence in paragraph 3?."
The answer to the first part is:
She acknowledges that some questions remain, even though the link between sleep and mental health is strong.
The answer to Part B of the question is that the detail from paragraph 3 that best supports the answer to Part A is when the author explains that the correlational relationship between the lack of sleep and problems like anxiety has not yet resolved whether the lack of sleep causes anxiety or is anxiety what causes insomnia. And still, most of the research has provided evidence that supports the causal direction being lack of sleep causing problems.
