Which accessibility feature allows keyboard users to control mouse movements?

The feature that allows keyboard users to control mouse movements is Mouse Keys. Mouse Keys is an accessibility function available in many operating systems that enables users to move the mouse pointer using the keyboard's numeric keypad. This is particularly beneficial for individuals who may have difficulty using a standard mouse due to motor impairments. By using certain keys on the numeric keypad, users can simulate mouse movements and clicks, providing them with an alternative means of navigation and interaction.

Other features listed serve different purposes. For instance, Slow Keys helps users by allowing them to adjust the time delay between when a key is pressed and when it is recognized by the system, making it easier for those who may accidentally press keys. Sticky Keys allows users to input key combinations by pressing one key at a time rather than simultaneously, aiding those who struggle with pressing multiple keys at once. Toggle Keys provides auditory feedback when toggle keys like Caps Lock, Num Lock, and Scroll Lock are activated or deactivated, but it does not assist with mouse control. Thus, Mouse Keys is the appropriate choice for controlling mouse movements through keyboard input.