Kelsey, Age 10, Is Impulsive

Multiple Choice

Kelsey, age 10, is impulsive. During school, he drops his pencil, rearranges the papers inside his desk, and yells at people across the room. Kelsey fails to follow the rules when he plays games and lashes out with hostility when he is frustrated. He suffers from both academic and social problems. Kelsey most likely has

A) Down syndrome.
B) an anxiety disorder.
C) autism.
D) attention-deficit hyperactivity disorder (ADHD) .