This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intellectual disability, communication, autism, and ADHD, Subject name: Psychiatry
Abnormality seen in ADHD is - 
Select and explain. 
A. Hyperactivity, B. Hallucinations, C. Delusion, D. All of the above
A: Hyperactivity
Answer: A: Hyperactivity 
Explanation: Ans is 'a' i.e. Hyperactivity o Characteristic triad of Attention deficit hyperactivity disorder includei. Hyperactivity,ii. Impulsiveness andiii. Inattention (distractibility or lack of concentration).