Census data from one country indicate that unmarried men over the age of thirty exceed unmarried women of this age, with a ratio of about ten to one. Most of these men do want to get married. However, obviously, unless many of them People marry foreign women, otherwise most people will remain unmarried. The above discussion is based on which of the following assumptions? ['More women than men emigrate.', 'Women in their thirties who are the same age as men in the country would rather remain unmarried.', 'Most unmarried men in the country are unlikely to marry women older than them.', 'Most unmarried men in the country are unwilling to marry non-native women.']