Which of the following statements about factors that encourage migration to the united states is false? a. some immigrants remain permanently in the us after finding a job. b. many immigrants work temporarily and send money to their families in their home countries. c. many immigrants come to the united states because jobs are not available in their home countries. d. immigrants working in the united states are paid with the currency of their home countries.

The wrong answer is the last one:
D. Immigrants working in the United States are paid with the currency of their home countries.

Immigrants work and live in the US, and very often their life is almost indistinguishable from those of the US citizens. They earn money like the citizens, get paid the same as the citizens (typically) ( and in the same currency) and then they spend this money typically inside of the US (for which they need the dollars). If they want their money to be in a different currency, they would have to exchange it. They can send the money to their home countries ( so answer B is correct) but they would have to exchange the currency.

The correct answer is "the protesters were attacked by chinese troops and many were killed or arrested."