Answer: The answer is B.
D, because it refers to all nocturnal animals not just one specific one and i got it right on usatp
The article "Radio Listeners in Panic" gives the background knowledge needed by supplying the necessary information in the article's first sentence.
We can say background knowledge is the knowledge of information that helps us understand something now. For instance, to understand a war between two countries, it is important to understand the history that led to that war.
In the New York Times article "Radio Listeners in Panic," the background knowledge necessary to understand the story in given in the first sentence. By supplying that information, the author makes sure readers will keep up with the article.
With the information above in mind, we can select option B as the correct answer.
Learn more about background knowledge here:
actually answer is c i took the test on study island