For what purpose does the writer want us to know about the U.S. higher education by illustrating St. John’s College as an example?
A.
to further explain diversity as one of the great strengths of U.S. higher education
B.
to tell us that St. John’s College teaches the most subjects in the U.S.
C.
to clarify that St. John’s College offers traditional math and science courses
D.
to explain that U.S. higher education is rather flexible