The step whose rate does not depend on the concentration of reactants is?

اگر رد عمل کی شرح ارتکاز کے ساتھ تبدیل نہیں ہوتی ہے تو یہ ______ ہے؟

Intermediate step

First step

Not possible

Zero order reaction

If a reaction rate does not change with concentration, then it is Zero order.
In zero-order reactions, the rate is constant and independent of the concentration of the reactants.
It means that changes in concentration do not affect the reaction rate.