Adwoa is a 3 years old who is working on a craft project at preschool. They have to be repeatedly reminded to sit still, to continue working on the craft, and to stop grabbing their peers' supplies. What is the MOST likely explanation for Adwoa's behavior?

a. They are not artistically inclined.
b. They are displaying a normal lack of impulse control.
c. They have an autism spectrum disorder.
d. They are not yet mature enough to be in preschool.