megyn is a 3 year old who is working on a craft project at preschool. she has to be repeatedly reminded to sit still, to continue working on the craft, and to stop grabbing her peers' supplies. what is the most likely explanation for megyn's behavior? group of answer choices she is not yet mature enough to be in preschool. she is displaying normal lack of impulse control. she is not artistically inclined. she has adhd.