Option 4: Methane -> Chloroform (CHCl₃) is produced by the chlorination of methane (CH₄). When methane reacts with chlorine gas in the presence of sunlight or UV light, it undergoes successive halogenation reactions: CH₄ → CH₃Cl → CH₂Cl₂ → CHCl₃. Methane serves as the starting hydrocarbon that provides the carbon backbone for chloroform synthesis -> correct