Alright here's the argument:
Chan: Undergraduate literature department should only cover "major literary works", and this precludes advertisements.
Wigmore: I'll concede that whether an advertisement could be classified as a major literary work is debatable, but advertisements have a negative effect on society because the population has a hard time distinguishing their real messages. The literature departments courses develop the critical skills in students to analyze texts. It is for this reason that the lit. department has a responsibility to include the study of advertisements in our coursework.
Question: Strengthen Wigmore's reasoning.
Prephrase: Okay, Wigmore is assuming a few things. 1. He is assuming that the fact that it's debatable whether or not a work of art is considered a major literary work is not sufficient to preclude it from being available in the undergraduate course work of the literature department. 2. He is assuming that the inclusion of the study of advertisements is necessary in the literature departments courses towards developing the critical skills to discern the real messages of powerfully detrimental advertisements.
This second point is noteworthy, because it's not that the study of advertisements is necessary towards developing critical thinking skills. In fact Wigmore says in the second sentence that "the department's courses give students critical skills to analyze and understand texts." The use of the term courses in it's plural denotes a broad interpretation of the literature departments courses so it is safe to assume that the departments courses in a holistic sense are developing critical thinking skills whether or not this debate between Wigmore and Chan centers around expunging the study of advertisements from the departments current curriculum or adding it to the departments curriculum.
We go to the questions with this in mind.
(A) This is irrelevant. There is nothing in the argument that sets rules or parameters for how ad agencies and/or companies should frame their messages. Get rid of it.
(B) This can not be inferred at all from Wigmore's argument. In fact he leaves the question of whether ads can be considered a "true literary work" up for discussion. This answer choice also talks about "forms of literature" where our stimulus talks about "true literary works". These things might or might not fall into the same category of literary works. Get rid of it.
(C) This answer choice is addressed to "All undergraduate students . . ." while Wigmore's argument is limited to the inclusion of a specific course in the curriculum of the literature department. It is a bit presumptuous, but I believe it is safe to say that Wigmore is arguing for the inclusion of this course in the literature department which would be an elective or a core requirement for a literature major. While I'm sure undergraduates of other majors could take this course as an elective Wigmore does not center his argument around the duty of "all undergraduate students" to take at least one course that "focuses on the development of critical skills."
Furthermore, we know that the literature departments courses in their current state give students critical skills to understand texts while this answer choice just addresses the "development of critical skills" which could be or could not be the same critical skills involved in analyzing and understanding texts.
In addition, Wigmore's argument focuses on including the study of advertisements in the literature departments course work to develop the critical skills to analyze and understand texts for the express purpose of discerning the real messages behind advertisements powerfully detrimental effect on society. This answer choice makes no mention of the course being taken for the purpose of discerning advertisements real message. Get rid of it.
(D) This is what we want. It's definitely supports Wigmore's argument. First off it limits it's scope to "The literature department's courses . . ." which is what the argument limits it's scope to. Second, the use of "any text" might at first seem too broad, but we are strengthening Wigmore's argument, and Wigmore's argument for studying advertising falls under the purview of "any text" as expressed in this answer choice. Also, this answer choice mentions enabling student to analyze and understand text that "have a harmful effect on society." This was the express purpose that Wigmore had for including the study of advertisements in the literature departments course work. Great answer choice. Select it and move on.
(E) ". . . ought to be free to choose the material to be covered . . ." Wigmore does not address the degree or lack thereof of autonomy that professors in the literature department should have. His argument is focused around the necessity of including the study of advertisements in the literature departments courses.
Read Aileen's addendum to my explanation. She has some really great insights that are definitely worth looking at.