______ Is the Most Common Childhood-Onset Behavioral Disorder, with Estimates

Multiple Choice

______ is the most common childhood-onset behavioral disorder, with estimates that ______.

A) Autism; there is 1 such child out of every 20.
B) ADHD; the percentage of children diagnosed worldwide is 7.2%
C) ADHD; 1 of every 3 boys and 1 of every 5 girls are affected
D) ADD; the percentage of children diagnosed in the U.S. is 25% and rising