Final answer:
The incorrect statement in redox reactions is that the oxidizing agent is the substance reduced.
Step-by-step explanation:
The incorrect statement concerning redox reactions is a. Oxidizing agent is the substance reduced.
In a redox reaction, the oxidizing agent is the substance that causes oxidation by accepting electrons and gets reduced. On the other hand, the reducing agent is the substance that causes reduction by losing electrons and gets oxidized. Therefore, the oxidizing agent is not the substance that is reduced, as stated in option a.