Answer:
Decision support system
Explanation:
A decision support system (DSS) is a in information employed by an organisation in its decision making process to determine and judge which course of action to take. It is usually employed by mid and higher management staff to assist them in decision making on issues that constantly fluctuate and are not predictable.
An organisation can choose to either fully computerize or human-powered, or combine both methods of the DSS.
DSS has the ability to gather and present information on target or projected revenue, inventories, periodic past and present sales figures, and other related information.
Therefore, DSS is the type of system that would meet the manager's needs.