Burning of natural gas is?Aa substitution reactionBa decomposition reactionCan endothermic reactionDan exothermic reactionAnswer: D. an exothermic reaction Read Explanation: Burning natural gas is an exothermic reaction. This is because the process releases energy in the form of heat. Natural gas is mostly methane (CH4).When it burns, it reacts with oxygen to produce carbon dioxide, water, and heat. Read more in App