Answer:
The correct answer is option C) "public broadcast media".
Step-by-step explanation:
The most effective way to alert coastal residents that a hurricane was fast approaching is to use the news media that reaches most people at the fastest way in the United States. In this case, the most effective way to alert people will be to use public broadcast media. For instance, the top 20 public radio stations of the National Public Radio (NPR) reached a weekly listenership of about 11 million people in 2018.