‘S’ will be the first part of the given sequence as it talks about the people “with hearing problems”. ‘R’ will come next as it talks about the problems faced by such people, that is, persistent noises. ‘Q’ will come next as ‘noises in the ears or head’ forms a logical phrase together. ‘P’ will be the last part of the given sequence as it makes it clear that the persistent noises heard in the ears or head are inaudible to others. Hence, SRQP is the correct sequence. Thus, option (c) is correct.