Answer: D. The article will show how the island people are fighting greenhouse gas.
Explanation: The article addresses the topic of the alarming damages that greenhouse gas is making to the environment. In the final part of the paragraph, the author mentions that only a small amount of these gases come from the Pacific islands and that the rest comes from other countries. Therefore; to call an action in the matter, the article will probably inform the reader of the struggles the people of the Island go through, and how they try hard on fighting this issue so that it raises awareness.