Which of the following is considered a visual prompt?

A visual prompt is designed to provide guidance or cues through visual means, aiding understanding and communication. Painting the same color on each plastic food container and lid serves as an effective visual prompt because it creates a clear, consistent visual reference for clients, helping them to easily identify and match the containers with their lids. This can be particularly beneficial for individuals with cognitive or perceptual challenges, as the uniform color helps reduce confusion and streamline tasks.

The other options, while they may assist in communication or engagement, do not primarily serve as visual prompts. Speaking slowly focuses on auditory communication, using hand gestures complements spoken language but is still more kinetic than purely visual, and playing educational videos provides visual content framed within a narrative rather than serving as a standalone prompt for a specific task or identification. Thus, the coloring of containers stands out as the most suitable example of a visual prompt.