Review Question - QID 213581

A 10-year-old boy is brought to his pediatrician by his parents because he has been having a difficult time focusing in school. His parents say that he is extremely intelligent and has no difficulty understanding concepts; however, he seems to not be able to focus during school. In addition, he has been disciplined several times over the last month because he interrupts his peers and cannot stay seated. He has also been demonstrating these issues at home where he leaves a lot of chores half completed and talks incessantly. Which of the following best describes the mechanism of action for the drug that would best treat this patient's symptoms?