MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The ability to move from one location to another is 1) _________ A) mobility. B) voluntary migration. C) variable migration. D) net migration. E) migration. 2) Several million Irish migrated in the 1840s primarily because 2) _________ A) disastrous economic conditions pushed them out of the country. B) poor environmental conditions induced them to migrate. C) they were attracted to the United States. D) Spanish invasion threatened their homes. E) the English forced them to become refugees. 3) Wilbur Zelinsky's model of migration predicted 3) _________ A) migrants move most frequently for economic reasons. B) women are more likely to migrate than men.