"It's been fun," she said. "Don't you agree?"
"Yes. It's been a blast," he said.
Answer:
look for the most important idea of the paragraph/story.
The correct answer is option B "Humans and nature live in a precarious balance". Alan H. Weisman is an American author widely known for his work as journalist. One of his most critically acclaimed works is "The World Without Us", a book where a scenario of the Earth without humans is described. One of the themes in Weisman's works are the balance that human and nature have, he would likely agree that this is a precarious balance.