Answer:
Correct answer is the Paris Agreement
.
Explanation:
The Paris Agreement is correct answer as it is the only option that is related with the protection of environment and climate changes. It was signed to limit the global warming.
Second option is not correct because the role of UN is to prevent conflicts and was the continuation of League of Nations.
NATO is a political and military alliance created after WW2 by United States and countries of Western Europe.
OPEC is organization whose main goal is coordinate policies related to petroleum.
The Warsaw Pact was military alliance created by Soviet Union and communist countries in Europe.
