Final answer:
Road signs are normally white rectangles with black lettering or symbols, but can vary in shape and color. They provide important information to drivers. Hence the correct answer is option A
Step-by-step explanation:
Road signs, indicated by option A, are typically white rectangles with black lettering or symbols, although some can be different shapes and use red letters or symbols as well. They are used to convey important information and instructions to drivers on the road.