The answer is A. Adaptation is adaptive behavior that someone with cognitive disabilities will use in order to make up for falling behind their peers who are developing at a normal rate. These can include how the child dresses themselves, their social skills, and communication skills. When we look at adaptation we are looking at "is the child able to dress themselves with the same skills as their peers. Are they able to use buttons, etc." With communication skills you are looking to see if the child is able to form the same types of complex sentences as their peers, or do they, for example, rely on "baby talk"?