Final answer:
Children exhibiting impulsivity and problems with sustaining attention are most likely to be associated with ADHD, a disorder characterized by difficulty in maintaining focus and controlling impulses.
Step-by-step explanation:
Impulsivity and problems sustaining attention are symptoms most commonly associated with Attention Deficit Hyperactivity Disorder (ADHD), which is a neurodevelopmental disorder. Therefore, the correct answer to the student's question is c) Children with ADHD. This disorder is characterized by a difficulty in maintaining attention and controlling impulses, which can manifest as hyperactivity and executive functioning difficulties. Children with ADHD may also face challenges in academic settings due to difficulties with following instructions and meeting homework deadlines, often resulting in perceived careless errors and learning obstacles.