‘Q’ will be the first part of the given sequence as per the subject verb agreement rule, that is, “Some educationists believe that”. ‘R’ will come next as it contains the object, that is, ‘young children’. ‘P’ will come next as it tells us about the action to be taken on the object, that is, ‘should not be exposed’. ‘S’ will follow ‘P’ as it completes the meaning of the previous words. Thus, QRPS become the right sequence of words. Hence, option (c) is correct.