The answer is authenticity.
The statement says that Tolstoy's writings on despair are authentic because he despaired a lot in his lifetime.
An appositive phrase renames the subject which in this case is Casper, so the appositive phrase is B. a foreign exchange student
The word being asked in the given above is technical courses. Technical schools is a general term is a general term that is concerned more on the employment, preparing students for skilled or trained labors. The courses include welding, culinary, office management, etc.
Thats great :D is there a question? or are you just telling a story
