Final answer:
Professor Gieryn's position on the future of the curriculum at IU is that it will become more focused on training students for jobs.
Step-by-step explanation:
Based on the information provided, Professor Gieryn's position on the future of the curriculum at IU can be inferred as option B: IU's curriculum will become more focused on training students for jobs.
This is supported by the mention of students shifting away from traditional liberal arts classes and instead focusing on preparing for the modern work world. The development of professional schools for medicine, law, and business also suggests a shift towards career-focused education.
Overall, it seems that Professor Gieryn believes that IU's curriculum should prioritize practical skills and career preparation in order to cater to the interests and needs of middle-class students.