What is most plastic made of?   select all that apply - inorganic compounds - organic compounds - petroleum or coal materials - carbon containing compounds - synthetic materials

Answer is C. Petroleum or coal materials.

Further explanation:

Plastics are mainly made of carbons, hydrogens, and nitrogen.

Organic compounds - a compound containing only CARBON. - FALSE

We already know hydrogen and other atoms are included.

Synthetic materials - man made material - FALSE

- Plastic is made of oils, which is a NATURAL material

Inorganic compounds - are compounds large in size ex. salt, cyanide. 

- This is true, but not the best answer.

Answer is C. Petroleum or coal materials.