The Fact That Stimulant Drugs Are Often Effective in Calming

Multiple Choice

The fact that stimulant drugs are often effective in calming children diagnosed with ADHD suggests that this disorder may involve:

A) a chronic understimulation in the child's nervous system
B) problems in the brain pathways that regulate attachment behavior
C) a hypersensitivity to the presence of sugar in the bloodstream
D) too much activity in the parts of the brain that control behavior