One Model Explaining the Debilitating Effects of Anxiety on Achievement

One model explaining the debilitating effects of anxiety on achievement proposes that it is

A) attention being diverted from the learning task to a preoccupation with one's feelings.
B) conditioning in which negative reinforcement obtained from withdrawing from tasks strengthens the anxiety syndrome.
C) physiological arousal that limits bodily functioning to avoid the anxiety-producing situation.
D) social effects such as embarrassment for appearing ill at ease or for being too boisterous.