A
Methane-based gaseous fuel
B
Compressed Hydrogen gas
C
Liquefied Petroleum Gas (LPG)
D
Propane and butane mixture
Correct answer: (a) Methane-based gaseous fuel
Explanation
Option A is correct because PNG is a methane-based gaseous fuel delivered directly to domestic and industrial consumers via pipelines. Options A, C, and D refer to different fuel compositions and do not describe PNG accurately.
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