Question

Which countries produce the most greenhouse gas emissions?

U.S. and Russia
South Korea and Japan
India and China
Mexico and Brazil

Answer 1

I think it's either A or C

Answer 2

The country of China has now (2011) surpassed the US as the single greatest greenhouse gas producer.

In order the China, United States and Russia top the list. Blocs of countries like the European Union are significant contributors.

Answer 3

C.