Final answer:
To access and adjust parental control settings on a Macintosh home screen, click on System Preferences.
Step-by-step explanation:
On a Macintosh home screen, you would click on System Preferences to access and adjust parental control settings. On a Macintosh home screen, you would click on "System Preferences" to access and adjust parental control settings. System Preferences is the central location for configuring various settings on a Mac, including parental controls. In the Parental Controls section, you can set up restrictions on applications, web browsing, and other activities to ensure a safer and more controlled computing environment, especially for users who might need monitoring or limitations.