Answer:
The correct answer is letter "A": core business.
Explanation:
Outsourcing is a strategy companies follow by which they hire a third party to be in charge of their production typically at lower costs than handling the production at companies' cost. These companies are specialized in providing certain types of services such as customer service, chain management, accounting or legal documentations.
However, core businesses imply firms taking decisions on how to direct the company's funds and what path to choose to keep the business up and running. Thus, the core business is managed by the parent firm itself.
