choose the sentence that should be added after the underlined sentence to build the main topic of the article. A.In Melbourne, Australia, nearly 100,000 people gathered near government offices and filled city streets. B.The U. N. Youth Climate Summit is a platform for young leaders who are driving climate action to present their solutions to a global audience. C.Many of the participants in this year's Global Climate Strike are young people—kids and teens—who skipped school to take part. D."I'm protesting because I'm worried that there won't be clean water for the next generations of children growing up in my village," said Abuya Mutai of Nairobi, Kenya.