In the question given below there are 2 statements marked as Assertion (A) and Reason (R). Choose the correct alternative from the following options.

Assertion (A)- The CFC's were banned throughout the world after adopting "Montreal Protocol"

Reason (R)- Chlorofluorocarbons is supposed to be the major cause of ozone depletion.

Both (A) and (R) are true and (R) is the correct explanation.

The correct answer is Option 1: Both (A) and (R) are true and (R) is the correct explanation.

Explanation:

• Assertion (A): The CFC's were banned throughout the world after adopting "Montreal Protocol". This statement is true. The Montreal Protocol is an international agreement that was adopted in 1987 to phase out the production and consumption of chlorofluorocarbons (CFCs) and other ozone-depleting substances. This was done to protect the ozone layer, which shields the Earth from harmful ultraviolet radiation.
• Reason (R): Chlorofluorocarbons is supposed to be the major cause of ozone depletion. This statement is true. CFCs are a major contributor to ozone depletion. When released into the atmosphere, they rise to the stratosphere where they react with ozone molecules, destroying them. This depletion of the ozone layer has serious environmental and health consequences.

Therefore, both the assertion and the reason are true, and the reason directly explains the assertion. The Montreal Protocol was adopted in response to the harmful effects of CFCs on the ozone layer, and its success in phasing out these substances has helped to protect the ozone layer and mitigate the associated risks.