‘Q’ will be the first part of the given sequence as it begins with the word, 'but' and is in contrast to the previous statement. 'S' will come next as it begins with the words, ' at a first glance' and introduces the topic to be discussed. 'R' will come next as it explains the point mentioned in the previous statement. 'P' will follow next as it asks a question about the previous statements. Hence, QSRP is the correct sequence. Thus, option (c) is correct.