‘Q’ will be the first part of the given sequence as it is incontinuation with the previous statement and talks about howNadir Shah invaded India. ‘S’ will follow next as it refers back to the previous statement which is clearly indicated form the word, ‘this’. ‘P’ will follow next as it is in continuation with the previousstatements and takes the story forward, which is indicated from thewords, ‘after a stay of two months’. ‘S’ will come next as it is in continuation with the previous statement and gives an example ofthe action he took on completion of the previous statement. Hence,QSPR is the correct sequence. Thus, option (a) is correct.