An assumption is something that has been taken for granted while making the argument. In the above argument the premise is that engineering students this year will find adjusting to the corporate world difficult. On the basis of this premise and some assumptions the author draws a conclusion about the measures the university should take.

In this case it is obvious that option (C) is the most probable assumption that the author may have made to arrive at the given conclusion since it is directly related to the action suggested by the author.

Options (a) and (d) are not relevant to the argument about the students not being able to adjust or the course of action for the university.

Option (b) may be true; however, if the author had made this assumption then the suggested course of action would not have been related to the university upgrading infrastructure and teaching. So option (b) cannot be the correct answer.

Hence, the correct answer is option c.