Which color sign means that supplies are in use?

The correct answer is associated with the color green, which is used in various organizational environments to indicate that supplies or equipment are currently in use. This color serves as a visual communication tool, clearly signaling to personnel and visitors that certain items should not be disturbed or should be approached with caution, as they are actively required for ongoing procedures or tasks.

In many industries, color coding is an essential practice to ensure safety and operational efficiency. Green typically implies that operations are ongoing, and it is an important aspect of workflow management. This helps to prevent accidental interruptions and fosters a smoother operational environment.