With formal thought,adolescents are able to

A) social-perspective take.
B) define and discuss love, justice, and freedom.
C) speak a different language with adults and peers.
D) All of these

With formal thought, adolescents are able to engage in social-perspective taking, which involves understanding different viewpoints and considering multiple perspectives. They are also able to define and discuss abstract concepts such as love, justice, and freedom. This increased cognitive flexibility allows them to communicate effectively with both adults and peers, potentially using different language styles depending on the situation. Therefore, all of these options are correct.