**Some critics argue that posture significantly affects cognition. Researchers O'Brien and Ahmed designed an experiment in 2014: participants stood or sat while making risky economic decisions. Standing is more physically demanding and is thought to require more cognitive resources. But the researchers found NO difference between standing and sitting groups.** What is the central PURPOSE of the text?
ATo advocate for standing desks
BTo criticize all posture research
CTo explain economic decision-making
DTo present the O'Brien and Ahmed study as an example of why caution is needed when claiming effects of posture on cognition
Answer & Solution
Correct answer: D. To present the O'Brien and Ahmed study as an example of why caution is needed when claiming effects of posture on cognition
The text uses the null result of the 2014 study to caution against overstating posture's effects on cognition. Option B captures this purpose. Option A misreads; C is too sweeping; D ignores the main thrust.
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