‘R’ will be the first part of the given sequence as it refers back tothe subject, that is, ‘he had passed’. ‘P’ will follow next as it isused to throw light on the time related to the verb, that is, ‘twoyears before’. ‘S’ and ‘Q’ will follow logically as they complete themeaning of the sentence and refer back to the subject which isindicated by the words, ‘and that he could’. Hence, RPQS is the correct sequence. Thus, option (c) is correct.