Passage Summary: Professor Wigmore argues that literature departments should teach advertisements because ads are harmful to a public that can't read between the lines, and literature classes teach exactly that kind of critical reading.

Conclusion: The literature department is responsible for including the study of advertisements in its undergraduate courses.

Reasoning: Advertisements are socially detrimental because their real messages are hard to discern, and literature courses equip students with the skills to analyze and understand texts.

Analysis: The argument relies on a significant 'missing link' regarding the transferability of skills. Wigmore assumes that the critical skills used to analyze 'true literary works' are the same skills needed to decode advertisements. If analyzing a Shakespearean sonnet has nothing to do with deconstructing a car commercial, the argument's bridge collapses. Look for an answer that confirms these analytical skills are actually effective when applied to the specific medium of advertising.