Safety instruction signs have a _____ background.

Safety instruction signs are designed to communicate important information about precautions, hazards, or safety procedures in a clear and recognizable way. The use of a white background is standard because it provides a neutral and visible canvas for the text and symbols that convey safety messages. White is often associated with clarity and attention, which is essential when delivering critical safety information.

The other colors have different associations. Orange, for example, is commonly used for warning signs, indicating caution. Green typically signifies safe conditions or the presence of safety equipment. Grey is not a standard color used for safety signage, as it can be less attention-grabbing and might not convey the necessary urgency associated with safety instructions. Thus, the use of a white background for safety instruction signs effectively ensures visibility and helps in communicating the necessary precautions to the public.