B. The enzyme positions the substrate to increase access during a reaction.
The catalytic cycle is, in chemistry, a reaction mechanism caused by an enzyme, and this method is characterized by sequences of chemical reactions.
In the catalytic cycle, the first reaction involves the binding of one or more substrates by the enzyme, and the interaction of the elements provides the chemical reactions. The enzyme positions the substrate to increase access during a reaction. In this cycle, the activation energy exceeds the repulsion force, being responsible for the collisions and breakdowns of the reagents. Using catalysts, the equilibrium of reactions is achieved faster.