单选题 Which of the following groups in NOT mentioned as migrants in the passage?
【正确答案】 A
【答案解析】本题仍是细节归纳题。从第12段中可知workers，settlers属于迁徙者，而从第10段可知colonizers也是迁徙者。全文未提及farmers。不过，根据常识，我们也可以解此题。