Answer : The correct option is, Octane [tex]C_8H_{18}[/tex]
Explanation :
Organic compound : Organic compounds are the chemical compounds in which the one or more atoms of carbon bonded through another elements like hydrogen, oxygen and nitrogen by the covalent bond.
Hydrocarbons are the type of organic compound that contains only hydrogen and the carbon atoms.
Inorganic compound : These are the substance that do not contain carbon bonded to hydrogen.
From the given compounds, we conclude that
The organic compound is : [tex]C_8H_{18}[/tex]
The inorganic compounds are : [tex]NH_3,CaS\text{ and }SO_3[/tex]
Hence, the correct option is, Octane [tex]C_8H_{18}[/tex]
