They are paragraphs from larger essays on the issue of whether Australia should become a republic. Therefore the main premise of each is not explicitly stated. It would be explicictly stated in the introduction to the essays from which the paragraphs were extracted. The topic of the paragraphs is how the issue of the republic is related to the questions of immigration and national identity. They both describe the same arguments but have opposite premises.
Task Read each passage carefully.
Choose the correct main premise for each passage. It is claimed that three quarters of our population is still Anglo-Celtic. According to this argument, if people want to migrate here they have to accept Australia's traditions and its way of life. Other countries, so this argument goes, do not feel that they have to change their constitution just because they accept immigrants from different cultures. Australia is no longer a nation of British and Irish people.