The given diagram shows molecules involved in an enzyme-controlled reaction.The CORRECT identification of X, Y and Z is

Explanation

In an enzyme-controlled reaction, the substrate (X) is the molecule upon which the enzyme (Z) acts. A non-competitive inhibitor (Y) binds to a site other than the active site on the enzyme, altering the enzyme's function without directly blocking the substrate from binding. This matches Option A. Option B misplaces roles, as the enzyme should facilitate interaction between substrate and inhibitor. Option C wrongly identifies a competitive inhibitor, which binds to the active site. Option D's configuration is incorrect as it does not reflect typical interactions between these molecules.