Bernie is trying to decide whether or not to be cremated. This best exemplifies

a. a final scenario

Early studies into the effectiveness of "sleep learning" tapes

suggested that learning could indeed occur if a tape was played while a subject was asleep. These studies failed, however, to monitor the electrical activity of the participants' brains, and thus did not consider the possibility that the tapes had actually awakened these individuals. This alternative explanation for the findings is consistent with the critical thinking concept of A) extraordinary claims. B) ruling out rival hypotheses. C) replicability. D) correlation versus causation.

Rosenzweig's study found that when compared to rats raised in an impoverished environment, rats raised in an enriched environment had ______ neurons with ______ synaptic connections

a. smaller; fewer b. smaller; more c. larger; fewer d. larger; more