(C) “The school created the very first teaching hospital in the world . . . as well as a fine observatory.”
Option C is the best option to show that scholars at Jundi Shapur were interested in various disciplines. It shows that the scholars studied anything from medicine to astrology. The ellipses between the two subjects can also indicate that there was more to be studied. Options A, B and D all show a variety at Jundi Shapur, but they show that the scholars came from various backgrounds and cultures. They do not necessarily show that the scholars had interests in a variety of disciplines.