Which type of system provides information such as five-year sales trends and profit planning?

The type of system that provides information on five-year sales trends and profit planning is an Executive Support System (ESS). ESS are designed to provide senior executives with easy access to internal and external information that is relevant to their strategic decision-making. They aggregate data from various sources, including data warehouses and databases, to present a comprehensive view of the organization's performance.

These systems often feature tools for visualizing trends, forecasting, and planning, which aligns perfectly with the need for analyzing long-term sales trends and making informed decisions about future profitability. By presenting high-level summaries and detailed reports, ESS aids executives in monitoring the organization's status and strategizing for future growth.

In contrast, Management Information Systems (MIS) primarily focus on providing operational data and routine reports, while Decision Support Systems (DSS) are geared towards aiding in complex decision-making with analytical models and data analysis. Office Automation Systems (OAS) facilitate everyday office tasks, which is not aligned with the specific strategic overview that an ESS delivers.