Which of the following systems is primarily focused on supporting managerial decision-making?

The Management Information System (MIS) is designed specifically to support managerial decision-making by providing timely and relevant information. Managers rely on MIS to gather data from various sources, process it, and generate reports that aid in decision-making. This system compiles and organizes information from Transaction Processing Systems (TPS), along with other data sources, which allows managers to analyze and evaluate performance, identify trends, and make informed strategic decisions.

MIS includes tools for reporting, data visualization, and analysis, which are crucial for managers to assess business operations and make improvements. It provides a comprehensive view of the organization's performance metrics and metrics that are vital for tactical and strategic planning, thus directly contributing to effective decision-making at various management levels.

Other systems mentioned serve different primary purposes. Transaction Processing Systems focus on the daily transactions and operations of the business, prioritizing efficiency and accuracy. Document Management Systems are centered around the creation, storage, and organization of documents rather than decision support. Customer Relationship Management systems are designed to manage interactions with customers and enhance customer services and relationships, rather than provide a broader view of management information pertinent to decision-making across various functions.