R-12 should be recycled instead of vented to the atmosphere because

A. recycling companies offer large financial incentives.

B. it has been proven to deplete the Earth's ozone layer.

C. R-12 is expensive.

D. R-12 is unstable.

I believe is B if not then it's A

Option (B)

Explanation:

R-12 is known as the Dichloro-difluoro-methane and it is a colorless gas. It is was earlier used in the refrigerators, vehicles air conditioning, and aerosol spray. The use of this R-12 was found to be depleting the ozone layer which was not a positive effect on the earth. Due to this, the use of this gas was banned and alternative energy resources were used. Its products containing this R-12 gas were not expensive and they were stable enough.

Hence, the correct answer is option (B).