Which One of the Following Is Not a Reason That

Which one of the following is not a reason that the cognitive changes of adolescence affect achievement?

A) The cognitive changes of adolescence allow individuals to engage in longer-term, hypothetical thinking that affects many decisions that high school students will have to make.
B) The personal fable inherent in adolescence will make it difficult for older high school students to realize that, if they do not hard try in school, they may not be accepted into their first- or second-choice universities.
C) The cognitive changes of adolescence enable individuals to study subjects, such as algebra and other advanced math classes, which require more sophisticated cognitive abilities.
D) Adolescents' increased future orientation allows individuals to think about and plan their long-term educational and occupational goals.