The correct answer is C. How a radio play fooled many people
Explanation:
This paragraph focuses on explaining how a fictional radio story caused a generalized panic because people believe the events narrated were real rather than just part of a story, and therefore they believed Earth was being invaded by aliens. In this context, the main topic or matter of the paragraph is to show how a radio fooled many people (option C). Moreover, this topic is explained by details such as "they thought the fake news bulletins were true."
