What is the main, or central, idea of the passage?

What is the main, or central, idea of the passage?
1. As a result of a news-style radio performance, some War of the Worlds listeners believed the broadcast to be true.
2. Because of an earlier warning that they were about to hear a work of fiction, most War of the Worlds listeners knew that they were not listening to real news.
3. Some early War of the Worlds listeners were so frightened that they hid in their basements or left their homes.