Question

When was the Montreal Protocol signed?

• A. September 16, 1987
• B. January 1, 1989
• C. December 11, 1997
• D. June 5, 1992

Answer 1

Answer:

A. September 16, 1987

The Montreal Protocol is an international treaty designed to protect the ozone layer. The related conference was held in Vienna. The Montreal Protocol was signed on September 16, 1987