Which f the following reactions shows that the formation of CO2 releases 393.5 kJmol?

The reaction that shows the formation of CO2 releasing 393.5 kJ/mol is the combustion of carbon, represented as:

[ C(s) + O_2(g) \rightarrow CO_2(g) ]

In this exothermic reaction, when one mole of carbon reacts with oxygen to form carbon dioxide, it releases 393.5 kJ of energy, indicating that the formation of CO2 is energetically favorable.