Final Answer:
The wrong way and do not enter signs are typically in the colors c. white and black.
Step-by-step explanation:
Wrong way and do not enter signs are critical components of road traffic signage, communicating important information to drivers. These signs are usually designed with a white background and black symbols or text. The use of a white background with black markings provides high contrast, making the signs easily visible and recognizable to drivers, even from a distance.
The color combination of white and black is a standard convention for regulatory signs that convey instructions or prohibitions to drivers on roadways. Options a, b, and d represent color combinations commonly associated with other types of road signs, but they do not match the standard color scheme for wrong way and do not enter signs.
Option C is the answer.