Hey Chiranjeev,
Thanks for explaining this at length, however I'm still not clear

I realize after you pointed out, that my query w.r.t. to point D is not same as dav373. Sorry for adding the confusion.
When I read the question,
I consider it a given that universities own the patent. The argument clearly states it. Now even if corporations have completed similar research (before or after universities doesn't matter), they wont be able to use their own research, since the universities own the patent for the research. Corporations will have to buy patents from universities before they can use the technology/research.
Option D
(D) Government-sponsored research conducted at Logos University for the most part duplicates research already completed by several profit-making corporations.
If govt sponsored research duplicates research completed by several profit-making corporations, there are only 2 possibilities ->1) corps file the patent first and get it 2) universities file the patent first and they own it. Since, we are not talking about corps filed patents, we can ignore those. For the patents that universities own, even if corps have done duplicate research, they will have to buy the patent from universities.
Now option A
(A) Profit-making corporations interested in developing products based on patents held by universities are likely to try to serve as exclusive sponsors of ongoing university research projects.
The statement as it stands says that companies would want to be exclusive sponsors of research projects. If we say that universities may make it a condition for anyone becoming an exclusive sponsor to also fund undergraduate teaching. Wouldn't that be an additional assumption, which the choice doesn't state? On the other hand, an assumption such as '
corps would want to be exclusive sponsors of research projects only if they can use the research later without buying the patents' seems more likely. Corps wont want to fund the projects for free. This leaves the universities without a sponsor for their undergraduate teaching programs. It's as simple as univs have 2 sources of funds now 1) Govt - Who sponsor the research so that univs can own patents 2) Corps - Who buy the patents which allows univs to make additional income for funding other projects.
With option A, they cut out one of their source. It's definitely a loss and a weakener