Answer:
D. The first paragraph
Step-by-step explanation:
Most of the time, when reading a long passage, you will be able to get the main idea in the first paragraph. This is because the author often uses the first paragraph to present his thesis statement. This is a sentence that tells the reader what it is that the author wants to argue in the essay. By including the main idea in the first paragraph, the author ensures that the reader knows what the passage will talk about and that he will be able to follow it more easily.