SAT English Practice Question

The author of the passage claims that "the United States has been at the forefront of the fight against global warming." The author then cites several pieces of evidence to support this claim. For example, the author points out that the United States has been a leading voice in international negotiations on climate change. The author also mentions that the United States has made significant investments in clean energy technologies. Which of the following best describes the author's main purpose in this passage?

1. A.provide a nuanced and balanced analysis of the United States's role in combating global warming.
2. B.persuade the reader that the United States has made substantial progress in addressing global warming.
3. C.criticize the United States for its inadequate efforts to combat global warming.
4. D.examine the historical development of the United States's approach to climate change.