Answer:
The correct answer is letter "D": Markings and colors.
Explanation:
Hazardous Material or HazMat are typically chemical products that can harm the environment. With the spread of industrialization, man has been using different materials to manufacture goods. Some of those materials are explosives, flammable, combustibles, and radioactive material that if not transported and used correctly could bring environmental issues that could not be solved.
While classifying and taking care of the Hazmats, markings and colors let operators identify what type of material they are dealing with and the type of danger they involve.
