Question

hazardous materials can be ——. select one: a. solids b. liquids c. gases d. all of the above

Explanation:

Hazardous materials can exist in various states of matter. Solids like certain heavy - metal compounds, liquids such as some corrosive acids, and gases like toxic fumes (e.g., carbon monoxide) can all pose hazards. Since all three states (solids, liquids, gases) are mentioned as having hazardous forms and option d encompasses all of them.

Answer:

d. All of the above