GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - DJ6GRRK6O76DM7RRJ

Which of the following best describes the function of the highlighted sentence? A. It provides support for an assertion made previously in the passage. B. It undermines a claim made earlier in the passage. C. It questions the usefulness of categorizing artists into particular movements. D. It identifies painters whose works were praised by some Impressionists. E. It suggests that painting out of doors was unusual during the early 1800s.