Answer:
The correct answer to the question: Which of the following is true about curb or walkway elevation? Would be, A: It should be marked with safety yellow or red warning paint or tape.
Explanation:
Visualization, and especially increasing the capacity for the human eye to tell and mark a difference in spaciation, is vital to prevent accidents from happening, especially when that spaciation is significant and a person may not become aware of it as the change starts. This can easily happen with unmarked curbs, or with walkway elevations. Because of color, and the capacity of the human eye to distinguish differences when colors are strong and easily identifiable, it is important to use these colors to mark differences, or changes in spatiation that would not be detected otherwise, especially if a color is neutral in kind, as is the color of pavement, or cement. This is why using such bright colors as yellow, or red, to mark a curb, or walkway elevation will decrease the possibility of people missing these changes and having an accident.
