The laughing man in the book When You Reach Me seems crazy because he practices punches to save Sal from getting run over by a truck. The laughing man in reality was Marcus (the kid who tries to explain to Miranda the concept of time travel) traveled back in time.
The elective course is a selected track that narrows your field to a specific realm. In studying a secondary field is a good <span> way to pursue multiple intellectual interests and develop specialized knowledge. This is equivalent to what we call in schools as D. minor.</span>