Which type of reaction releases the greatest amount of energy per mole of reactant? (1) combustion (2) decomposition (3) nuclear fusion (4) oxidation-reduction

Nuclear fusion.

Nuclear fusion reactions release a lot of energy

Explanation:

In natural philosophy, the nuclear reaction could be a reaction during which 2 or additional atomic nuclei identical enough to create one or additional completely different atomic nuclei and subatomic particles (neutrons or protons). The distinction in mass between the reactants and product is manifested because the unharness of enormous amounts of energy.

(3) nuclear fusion. Nuclear fusion reactions release a lot of energy