’S’ will be the first part of the given sequence as it begins with the words, ‘One of the greatest poets’. ‘P’ will come next as it mentions the name of the poet, that is, ‘Muhammad Iqbal’. ‘R’ will come next as it contains the verb, that is, ‘proudly influenced’. ‘Q’ will follow logically as it contains the object of the sentence. Hence, SPRQ is the correct sequence. Thus, option (d) is correct.