The central executive plays a role when students are studying for an exam because:

The central executive plays a role when students are studying for an exam because: it is the one that governs the memory systems and is responsible for distributing the attention assigned to each of the tasks to be performed and monitors the attention of the task and its adjustment to the demands of the context.

Explanation:

The Baddeley and Hitch model is considered a multicomponent one, since it consists of a central executive that regulates two systems: the phonological loop and the visuospatial agenda. The central executive is the system of voluntary control and decision-making, being closely related to attention and conscious experience, that is, it is the control system, which is the mental process that allows attention to be distributed and that regulates how much concentration the complex mental system needs to perform a task respecting the demand of the context. Baddeley specifies some functions of the central executive: The coordination in two independent tasks (storage and processing of information), change of tasks, strategies of recovery of the operations; selectively assist specific information and inhibit irrelevant information and lastly, activate and retrieve information from long-term memory.

tbh idk same thing here