What kind of chemical reaction takes place when electric current is passed through articulated water and describe the role of H₂SO₄ added during the process? a) Electrolysis; H₂SO₄ acts as an electrolyte. b) Combustion; H₂SO₄ acts as a catalyst. c) Oxidation; H₂SO₄ acts as a reducing agent. d) Substitution; H₂SO₄ acts as a solvent.