Which of the following is a combustion reaction? H_(2)Oarrow H_(2)+O_(2) C CH_(4)+2O_(2)arrow CO_(2)+2H_(2)O

The correct answer is option C: $CH_{4}+2O_{2}\rightarrow CO_{2}+2H_{2}O$.<br /><br />A combustion reaction is a chemical reaction in which a substance (usually a hydrocarbon) reacts with oxygen to produce carbon dioxide and water as products. In this case, methane ($CH_{4}$) reacts with oxygen ($O_{2}$) to produce carbon dioxide ($CO_{2}$) and water ($H_{2}O$). This is a classic example of a combustion reaction.