Question

which of the following represents an organic compound?

Explanation:

Organic compounds contain carbon - hydrogen bonds. The first structure is water ($H_2O$), the second is sulfuric acid ($H_2SO_4$), and the third is an unsaturated hydrocarbon with carbon - carbon double bond and carbon - hydrogen bonds. Hydrocarbons are organic compounds.

Answer:

The third structure (the one with carbon - carbon double bond and carbon - hydrogen bonds) represents an organic compound.