I believe that the best answer among the choices provided by the question is are the following :
<span> H2O2 H2O </span><span>catalase</span> Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
Catalase is a type of enzyme that breaks down hyrogen peroxide and turns it unto water and oxygen. Catalase is involved in a degradation reaction. It speeds the breakdown of hydrogen peroxide in nearly all organisms. Hydrogen peroxide is a powerful oxidizer that can attack and denature cellular molecules like DNA
Catalase speeds the breakdown of hydrogen peroxide into water and oxygen as shown by the reaction;