When the limiting reactant in a chemical reaction is completely used, the reaction stops.
What is a chemical reaction?
A chemical reaction is a process in which two or more substances undergo change to make another compound or substance.
The substance that reacts is called reactant.
The substance that is formed is called a product.
When the reactant is completely used, the product will not create and the reaction will stop.
Thus, the correct option is A, The reaction stops.
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