Dan, an Adolescent, Has More Developed Cognitive Skills Than His

Dan, an adolescent, has more developed cognitive skills than his 6-year-old brother Timmy because Timmy's thinking

A) is, in general, bound to what he can directly observe.
B) moves easily between specific and abstract ideas.
C) systematically generates alternative possibilities and explanations.
D) is more imaginative and less focused on the real world.