D should be a detail included in a summary of the text because choice D gives a main event that happens in the story. A summary should have a few main events but not too many because that will give the story away. A summary should also be intriguing. This means it should make the reader want to read the story that the summary is about. Finally, make sure your summary is not too long. Make sure that is 3-5 sentences long, at least a paragraph, or just however long your teachers tells you to make it.
In contrast to the ongoing trade imbalances with China and Japan, the United States trade deficit with Mexico declined by $500 million as a result of record exports to that country.