Parents: We have observed that the college does not follow a fair policy while allocating campus housing to its students. A quick look at Block B indicates that it majorly houses international students while most domestic students are allocated Block A. Is it because the college wants to prevent international and domestic students from intermingling? College Representative: The accusation is not true. While allocating housing, we do not look at any nationality information. Only the students' first names and grades are used while allocating housing. The allocation should hence be random. Which of the following assumptions forms an inherent weakness in the college representative's response to parents' charges? A. There is no discrimination against international students. B. The policy followed by the college is common policy and is followed by other colleges too. C. It is not possible to recognize the nationality of a candidate by looking at his or her first name. D. There are no exceptions, whatsoever, in the explained procedure for campus housing allocation. E. Grades of international students are significantly different from those of domestic students. My question is - The way said question is framed makes it sound like a 'weaken' question, but in fact is an assumption question

You won't see such a confusing question stem on the GMAT. That said, we do have to be careful in reading CR question stems since they do sometimes use wording that is a little unexpected or unfamiliar, though not very confusing if carefully read.

We are not looking for a weakener here. We are looking for an assumption. "...assumptions forms an inherent weakness..." is just another way of saying "is an assumption." By the very fact that an assumption is not explicitly stated, it becomes an inherent weakness of the argument. Whether it is true or not is not given. So "weakness" is used in that context. We are looking for a regular assumption of the argument.