The correct answer is:
B. Black letters or symbols on a yellow background
Yellow is commonly used for warning signs that indicate hazards ahead, such as curves in the road or narrow bridges.
A.
Black letters or symbols on a white background
B.
Black letters or symbols on a yellow background
C.
White letters or symbols on a blue background
D.
White letters or symbols on a green background
1 answer
The correct answer is:
B. Black letters or symbols on a yellow background
Yellow is commonly used for warning signs that indicate hazards ahead, such as curves in the road or narrow bridges.