Answer:
D). Communication is irreversible.
Explanation: The following incident is an example of "Interpersonal Communication" and the phase both Amber and John are experiencing is the irreversible nature of communication. However, they both have apologized for their behavior. But, Mary is unable to forget the incorrect use of words by John for her. Here, they both are reflecting the cons of interpersonal communication which can also be thought of like a pro as this kind of conversation focuses on the follies and mistakes of each other and also enforcing the individuals to develop their character traits by altering their behavior. As deep down, Mary admits herself being a slob and thus, shows anger as she is not ready to accept her folly.
A claim is something that can be defended with evidence while an opinion is just what you believe and does not require any evidence
You should look at web sources that have recently been updated because a lot of times new information is present that could change the original point/evidence. This could discredit the source. You also should do this because the newer the information, the more credible it is in the time (older information could easily be outdated).
Answer would be conflict. Antagonist is essentially the protagonist's enemy.
