What action must you take to change the number of items displayed per page in core reviewer?

To change the number of items displayed per page in core reviewer, selecting from the dropdown menu is the appropriate action to take. This feature typically allows users to customize their viewing experience by choosing how many items they wish to see at once, usually ranging from options like 10, 20, or 50 items per page. This capability enhances usability by providing flexibility depending on the user's preference or the context of their work.

Options involving navigating to user preferences, modifying database settings, or updating software settings do not directly pertain to the immediate action of changing the items displayed per page. These alternatives might involve broader system configurations rather than the specific user-level adjustment required in this scenario. The dropdown menu is a direct and user-friendly approach to making quick changes to the display settings without delving into more complex configuration options.