Step 1: Understanding ADHD.
ADHD is a neurodevelopmental disorder characterized by difficulty in attention regulation, hyperactivity, and impulsiveness. These children often have deficits in executive functions controlled by the brain's frontal lobes and other areas involved in motor coordination.
Step 2: Analyzing the options.
- (A) Correct, children with ADHD often have deficits in executive functions, which include planning, attention, and impulse control.
- (B) Correct, the frontal lobes are involved in voluntary movement control, problem-solving, and verbal expression, which can be impaired in children with ADHD.
- (C) Correct, the cerebellum is involved in motor coordination, and issues with it can affect muscle control and motor skills in children with ADHD.
- (D) Incorrect, ADHD is not typically referred to as a "hypokinetic disorder," which involves a reduction in movement, unlike ADHD's hyperactivity component.
Step 3: Conclusion.
Thus, the correct answers are (A), (B), and (C).