Final answer:
The user interface component enables someone to communicate with the DSS.
Step-by-step explanation:
The component that allows someone to communicate with the DSS (Decision Support System) is called the user interface. The user interface provides an interactive platform for users to input their queries or requests to the DSS and receive the corresponding outputs. It typically includes forms, buttons, menus, and other interactive elements that facilitate the communication between the user and the DSS.