HCFCs (Hydrochlorofluorocarbons) are also known as:

Correct option is C

HCFCs (Hydrochlorofluorocarbons) are man-made compounds that act as a natural drain of ozone in the atmosphere. Although they are less harmful than CFCs (Chlorofluorocarbons), HCFCs still contribute to the depletion of the ozone layer in the stratosphere. They release chlorine when broken down by ultraviolet radiation, which reacts with ozone (O₃) molecules, reducing their concentration and weakening the ozone shield.

Key Points:

● HCFCs are transitional replacements for CFCs.
● HCFCs are controlled under the Montreal Protocol and are being phased out globally.