Final Answer:
CFCs.refrigerants have the highest ODP.c)
Step-by-step explanation:
Chlorofluorocarbons (CFCs) have the highest Ozone Depletion Potential (ODP) among the options provided. ODP is a measure of the destructive impact of a substance on the ozone layer. CFCs contain chlorine, which, when released into the atmosphere, reacts with ozone molecules, contributing significantly to ozone layer depletion.
CFCs were widely used in refrigeration, air conditioning, and aerosol propellants before their detrimental environmental effects were recognized. The Montreal Protocol, an international environmental agreement, has mandated the phase-out of CFCs and other ozone-depleting substances to mitigate their impact on the ozone layer and protect the Earth's stratosphere.
In summary, CFCs, marked by their chlorine content, have the highest ODP among the listed refrigerants. The phase-out of CFCs reflects global efforts to address environmental concerns and safeguard the ozone layer, highlighting the importance of transitioning to environmentally friendly alternatives in various industrial applications.
Correct option is c) CFCs