The author of the text that contains this quote appeals to the reader's sense of logic by quoting an authority/expert on the matter. Taking into consideration that expert's opinions, in argument, are as close to a fact as you can get without actually using a fact, this shows us how your best answer here is option B.
The correct answer for the question that is being presented above is this one: "(b)MADAM POTIPHAR. (ironically) Send for Joseph? It would be useless. Joseph has affairs of his own on hand, always." The piece of dialogue from The Chaste Adventures of Joseph: A Comedy most reveals Madam Potiphar’s motives for wanting her husband to replace hissecretary, Joseph is that <span>(b)MADAM POTIPHAR. (ironically) Send for Joseph? It would be useless. Joseph has affairs of his own on hand, always. </span>
If a story has an unreliable narrator, you should still trust what they say, although you must take it with a grain of salt. The narrator could still be telling the truth, although if they are insane they may describe seeing a ghost when there wasn't really a ghost. An unreliable narrator does not create a fake story, only an unreliable story, where there may be holes or lies weaved into truth.
<span>the climax of the subplot leads to the falling action of the main plot.B</span>
