A wiki might be considered an unreliable source because many users collaborate modifying the content and structure directly. This would mean that anyone can contribute and they might write false information, or opinions. If you need to expand vocabulary or research for information it is better to consult books or articles written and corrected by professionals. <span />
C) The burglars were politics related. I didn't read the article, but this is probably most related to Nixon's Watergate scandal.
A is incorrect because they are anti-communist, so wouldn't support Cuba.
B is a logical fallacy and completely unrelated to the article.
D is wrong for obvious reasons: teamwork isn't the main idea of the article.
Situational Irony
Situational irony is the contrast between what is expected to happen and what actually does happen. It refers to a specific situation or event. Verbal irony is the contrast between what someone says and what is actually meant. Think sarcasm. Dramatic irony is when the audience knows a key piece of information that a performer on stage does not. An example is Romeo and Juliet during the balcony scene. The audience knows Romeo is listening in on Juliet's private thoughts, but she does not. A conflict is a problem and the resolution is how it is fixed.