What does the idiom under the weather mean

What is the relationship between paragraph 2 paragraph 3 through 29?

Make sure the topic of your persuasive essay is not a. something someone else is writing about b. a fact c. something you have written about before

The brother of a presidential candidate writes an editorial in which he defends this candidate against charges of corruption. in such a circumstance, it is most appropriate for the reader to a) suspect that the candidate may have been framed. b) consider whether the candidate has the best family or not. c) wonder if the writer may be biased, due to his family connection. d) wonder if the writer may be inaccurate, due to wanting to get people to read his column. \