What color indicates construction and maintenance warnings on traffic signs?

Answer: C — Orange

The color that indicates construction and maintenance warnings on traffic signs is orange. This color is universally recognized for alerting drivers to construction zones, roadwork, and maintenance activities. Orange is used to enhance visibility and grab attention, making it easier for drivers to notice and react appropriately to potentially hazardous situations on the roadway. While blue typically indicates informational signs or guidance regarding services, and brown relates to recreational or cultural interest areas, these colors do not signify construction. Yellow, on the other hand, is often used for general caution and warning signs, indicating situations such as curves, pedestrian crossings, or school zones, but it does not specifically denote construction or maintenance activities. Therefore, orange is the correct choice when identifying warnings related to construction and maintenance on traffic signs.