Warning and danger are two examples of what type of signal?

The correct answer is that warning and danger are best classified as words. These terms are commonly used in safety signage and communication to convey specific messages about risks or hazards. The use of clear and direct language helps ensure that individuals understand the level of threat associated with a situation, making it crucial for promoting safety in various environments, especially in workplaces.

Words are effective in providing detailed information, allowing for clear instruction and guidance that images or symbols alone may not fully convey. For instance, while symbols can represent hazards visually, the words "warning" and "danger" provide context that enhances comprehension, particularly for individuals who may not be familiar with all graphical representations.

Images and symbols certainly play a significant role in conveying safety information, as they can visually depict hazards and instructions, but they may not always carry the same immediate weight or clarity as a well-chosen word. Sounds also serve as cues in signaling danger but do not represent the conceptual nature of the hazards themselves.