Question

What can cause attention deficit hyperactivity disorder (ADHD)? A. low levels of gamma-amino butyric acid B. low levels of serotonin C. low levels of endorphins D. low levels of acetylcholine

Answer 1

Answer: B

Explanation: Because serotonin influences mood, social behavior, sleep, and memory. Low levels of this will cause attention deficit hyperactivity disorder or (ADHD).