Further evidence of a connection between brain physiology and psychological states has recently been uncovered in the...

Christopher on July 27, 2018

@smilde11, this question is asking you to identify the one answer choice that doesn't weaken the argument. (A) actually somewhat supports the argument by showing that anti-depressants stimulate the part of the brain in question, meaning there could be a correlation. It's not definitively strengthening, but it doesn't contradict or weaken the argument as the other answers do, and since you're looking for the one answer that does not weaken it, (A) is correct.

(B) provides an alternative explanation for why there is lower brain activity in that portion of the brain.

(C) provides addition information that weakens the correlation between frontal lobe activity and general disposition by saying that general disposition varies much more significantly than frontal lobe activity does.

(D) argues that both frontal lobe activity and general disposition are caused by something else in the brain, so general disposition cannot be the result of frontal lobe activity but rather the result of limbic activity that concurrently changes frontal lobe activity.

(E) is similar to (B) by providing an alternative explanation that says that frontal lobe activity is a result of activities that are altered by your general disposition rather than the other way around.