How can Linda limit certain Spotlight searches on her Mac?

To limit certain Spotlight searches on her Mac, Linda can deselect Spotlight Suggestions in the Spotlight pane of System Preferences. This option allows users to customize what content is included in Spotlight searches. By turning off Spotlight Suggestions, she will effectively restrict the search results that appear for web content and suggestions, thus helping her refine her search experience to focus on the areas of information she deems more relevant.

The other choices do not provide a practical solution for limiting Spotlight searches. Restarting the Mac with specific key combinations does not relate to the Spotlight functionality. Adjusting parental controls focuses primarily on restricting user access to certain features or content, rather than specifically refining Spotlight search results. Lastly, uninstalling Spotlight is not an option on macOS, as it is a core service integral to the operating system's search functionality.