Reading Comprehension (RC) | Re: Caffeine, the stimulant in coffee, has been called “the most widely us

Hello,

Can somebody please explain Q7?

Thanks.

Which of the following, if true, would most weaken the theory proposed by Snyder et al?

(A) At very low concentrations in the human brain, both caffeine and theophylline tend to have depressive rather than stimulatory effects on human behavior.

(B) The ability of caffeine derivatives at very low concentrations to dislodge adenosine from its receptors in mouse brains correlates well with their ability