Final answer:
The correct answer is c. Executive information system, which serves strategic levels of an organization and aids in making non-routine decisions.
Step-by-step explanation:
The system that assists with non-routine decisions, serves strategic levels of the organization, and helps answer questions regarding what a company's competitors are doing, as well as identifies new acquisitions that would protect the company from cyclical business swings is: c. Executive information system. Executive information systems (EIS) are designed to provide top executives with the data they need to make strategic decisions, including analysis of competitors and potential acquisitions for stability during cyclical business periods.