Final answer:
Information systems tailored to support basic business functions like accounting or marketing are known as Functional information systems. They help streamline department-specific processes and enhance productivity.
Step-by-step explanation:
Information systems that focus on operational and managerial applications in support of basic business functions, such as accounting or marketing, are known as d) Functional information systems. These systems are designed to support the specific processes and requirements of individual departments or areas within a company, streamlining tasks and enhancing productivity. For example, a functional information system in accounting might manage accounts payable and receivable, while a system in marketing might track campaign results and customer interactions.