Im pretty sure that it’s B. Because in academic writing you should give attention to all sides of the issue.
Credible would be
Someone who's credible is honest and believable. ... Similar to words like reliable and plausible, credible is an adjective that comes to us from the Latin credibilis, meaning “worthy to be believed.” A credible reputation is often earned through consistent good behavior and an overall trustworthy personality.
Answer:
There are only two sentences in this paragraph.
Explanation:
Maybe they want you to identify that these are run on sentences and you can split them up so there are 5?