Answer: b. About 15% of Chapel Hill’s undergraduates come from other countries.
Step-by-step explanation:
This is based on text from "Brief History of Chapel Hill". Fifteen percent of Chapel Hill's undergraduates coming from other countries is quite a significant percentage and just proves that there are different nationalities in the town.
With that many foreigners in the university, there must surely be a significant number of other foreigners in the town because university populations have been known to be representative of their location.