Correct Option: D

In chemistry, the study of rates and mechanisms of chemical processes and, of the factors on which they depend, is called kinetics. is the study of how fast chemical reactions occur. It provides evidence for the mechanisms of chemical reactions and studies the most effective way of causing a reaction to occur. It studies reaction mechanisms, examining what path the reactants take in order to become the products, and provides a very detailed picture of which bonds are broken and formed during the course of a reaction.