What evaluates a piece in terms of its use of the elements of arts

Igotta why is there only 2 semesters and 4 quarters and not 4semesters and 4 quarters? 1 quarter for each semester? ? is this a dumb question?

Is the name that historians use for the time period beginning around 476? a. baroque b. rococo c. the renaissance d. the middle ages

Some have called jazz music “america’s classical music.” what is meant by this statement? do you agree or disagree?