The anwser is B) A biologist published a book that opened the public’s eyes to DDT’s harmful effects.
Explanation: A biologist called Racheal Carson wrote a book called “Silent Spring” in 1962. The book stimulated the widespread public concern over the use of DDT.
This would be “future” because it says “I will Have” by “end of next year” it’s implying that when next year comes he/ she will have traveled around the world. Next year would be future.
