Species that occur in a reaction pathway but not in the overall reaction are known as
Reactants
Inhibitors
Products
Intermediates
Correct answer is D
In a chemical reaction, intermediates are the chemical species that are formed during the reaction but are subsequently consumed in further steps, leading to the final products. They are transient species that exist momentarily during the reaction process and are not present in the initial reactants or the final products of the overall reaction.