SEa course of study on economic and financial subjects and managing a business 商业学，商学
nGRAMMAR: Singular or plural verb?
Business studies is followed by a singular verb:
Business studies is now a popular subject.
Examples from the Corpus
business studies• College had been a first degree in law at Berkeley followed by a year at Columbia in New York doing business studies.• One approach which is curiously similar to business studies in its view of the populace is that of some contemporary Marxism.
From Longman Business Dictionary
business studiesˈbusiness ˌstudies noun [plural]COMMERCE
the study of economic and financial subjects and managing a business
The university offers a BA (Honours) degree programme in Business Studies.