S will be the first part of the given sequence as it introduces the central idea, that is, a university is a community of students and teachers. Q will follow next as ‘the two’ is used for ‘students and teachers’ mentioned in the very previous part. P will follow next as it tells the reason that why both of them are required to work together, that is, to advance knowledge and R will be the last part because it says that along with advancement, it is needed to disseminate the knowledge as well. Hence, SQPR is the right sequence. Thus, option (d) is correct.