’S’ will be the first part of the given sequence as it introduces us to the plot with the defined subject, that is, ‘The failure of the British government’. ‘P’ will come next as it contains the verb, that is, ‘to accept’. ‘R’ will come next as ‘P’ contains the words, ‘any of the’ which must be followed by a plural. ‘Q’ will follow logically as it completes the meaning of the sentence. Hence, SPRQ is the correct sequence. Thus, option (a) is correct.