‘Q’ will be the first part of the given sequence as it states the condition of the hall (referred in S1), that is, it is packed with delegates. ‘S’ will come next because it again makes a further reference to the delegates. ‘R’ will pair with ‘S6’ as R talks about the fact that some people are left standing and then S6 says that some were leaning against the wall due to non-availability of space. Only option (d) has got ‘R’ at the last. Hence, QSPR is the right sequence. Thus, option (d) is correct