Identify one cause of involuntary migration
a. the need for greater pay
b. being threatened for practicing a religion
c. the opportunity to own land

The correct answer is b. being threatened for practicing a religion

Unlike the need for greater pay and the opportunity to own land, the second example shows a scenario that is common in war period when people from different religions are forced to leave the country and their property is taken away from them. This has been seen even in modern times and not just historically. These people don't want to leave so its involuntary.