Which single word indicates caution on the sign?

• A. Warning
• B. Caution
• C. Alert
• D. Notice

Answer: (A)

The word that signals you should act with care because a hazard is present is “Warning.” It’s the standard label used on safety signs to alert you to a dangerous condition that could cause serious injury if ignored, so it’s the strongest cue to be cautious. The other terms serve different purposes: “Caution” can indicate a milder hazard or precaution, “Alert” is a general prompt, and “Notice” is mainly informational rather than a hazard warning. So when a sign is signaling a hazard that requires careful attention, the single word you’ll typically see is Warning.