The protocol amended in 1990 to protect the Ozone layer by completely phasing out CFC is :
AKyoto Protocol
BCartagena Protocol
CStockholm Convention
DMontreal Protocol
Answer:
D. Montreal Protocol
Read Explanation:
The original Montreal Protocol, signed in 1987, was the first step in international efforts to protect stratospheric ozone.
The London Amendment (1990) changed the ozone-depleting substances emission schedule by requiring the complete phaseout of CFCs, halons, and carbon tetrachloride by 2000 in developed countries, and by 2010 in developing countries.
Methyl chloroform was also added to the list of controlled ozone-depleting substances, with phaseout in developed countries targeted in 2005, and in 2015 for developing countries.
