What is the definition of a business combination?

Select one:
O a. It is a combination of the investor and its associates
O b. It is a combination of the investor and its joint
ventures
O c. It is a transaction or other event in which an acquirer
obtains control of one or more businesses.
O d. It is a combination of two or more International Financial Reporting Standards in accounting for a single transaction,

c. It is a transaction or other event in which an acquirer obtains control of one or more businesses.