Which color sign is used for road construction or repair warnings?

Answer: C — Orange

The correct response indicates that orange is the color used for road construction or repair warnings. This color serves a crucial purpose in enhancing safety and awareness for drivers. Orange signs are specifically designed to signal that there may be construction zones, road repairs, or other temporary changes in the roadway conditions ahead. In addition to catching drivers' attention, the use of orange allows for quick recognition that the situation is dynamic, and they should adjust their driving behavior accordingly. It is essential for road users to be alert to these signs, as they indicate potential hazards and the need for caution near active work sites. Other colors, like white, serve regulatory purposes; blue signs typically provide information related to services for motorists, and brown signs indicate recreational and cultural points of interest, making them unsuitable for conveying the specific warnings associated with road construction and repair.