What best describes a Management Information System (MIS)?

A Management Information System (MIS) primarily serves the purpose of supporting routine decision-making within an organization. MIS collects, processes, and analyzes data to provide timely and relevant information that aids managers in making informed decisions about daily operations. By offering reports and insights based on the data collected from various sources, MIS helps ensure that decisions are made based on accurate and up-to-date information.

This focus on supporting decision-making is what distinguishes an MIS from other types of systems. For instance, while event planning is important, it doesn't encapsulate the core functions of an MIS. Database maintenance is typically a specific function of database management systems rather than a management information system. Entertainment systems, on the other hand, are unrelated to the business and operational purposes of an MIS. Therefore, the option highlighting routine decision-making aligns perfectly with the primary function of a Management Information System.