C. Growing bigger
However, I am still not too sure.
Answer:
Johnny's story is to inform, while the Crescent Bay Beach story is to persuade.
Explanation:
Johnny's story gives information to people who are reading the article, and people would want to know what happens in the story. Crescent Bay is wanting people to come out and clean the beach, so they are running a campaign to raise awareness and to persuade people to do their part.
An effective argument is established by taking the time to look at both sides of an issue.
Discrediting someone's argument or learning the popular opinion is not a good way of creating arguments, while it is not very subjective to decide what is better and what is worse.