Answer and explanation:
"10-20% of preschoolers exhibit challenging behaviors such as aggression, noncompliance, defiance, tantrums, and property destruction (this goes up to 30% for those living in poverty)."
I personally think this is a false statement. Preschool kids have a tendecy to develop some minor behavioral problems because it is proper of that rage of age, except for major property destruction. And I also don't think it's a social statement issue.