Explanation:

Liquefied Petroleum Gas (LPG) is a flammable mixture of hydrocarbon gases used as fuel in heating appliances, vehicles, and as a refrigerant. It is primarily composed of propane ($\text{C}_3\text{H}_8$) and butane ($\text{C}_4\text{H}_{10}$), or a mixture of both, with small amounts of other hydrocarbons like propene and butene. Option (C) is correct because butane is a major component of LPG. Option (A) is incorrect; Methane ($\text{CH}_4$) is the primary component of natural gas, not LPG. Option (B) is incorrect; Ethane ($\text{C}_2\text{H}_6$) is also a component of natural gas and is present in very small quantities in some LPG formulations, but not a primary component. Option (D) is incorrect; Hexane ($\text{C}_6\text{H}_{14}$) is a component of gasoline (petrol) and is not a significant component of LPG.