Answer:
D. attention deficit hyperactivity disorder.
Step-by-step explanation:
Attention-deficit hyperactivity disorder: The term Attention-deficit hyperactivity disorder is also referred to as the term ADHD. ADHD is considered to be a chronic condition due to which plenty of children gets affected and it can often continue in adulthood phase of a child's life.
It includes persistent problems or difficulty in combination including impulsive behavior, difficulty in keeping attention, and hyperactivity, etc.
Symptoms:
1. Self-focused behavior.
2. Lack of focus.
3. Emotional turmoil.
4. Problems playing quietly.
In the question above, the given symptoms signify that Isabel suffers from ADHD.