The term wetbacks refers to ________.

The term wetbacks refers to ________.
 
  a. Mexicans who secretly swim across the Rio Grande
  b. contract workers who are imported from Mexico
  c. Mexicans who cross the border in compliance with immigration policies
  d. migrant workers from Mexico who are granted permanent residency

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In which of the following ways did the attacks on the World Trade Center in 2001 affect New York's Chinatown?
 
  a. Buildings were damaged.
  b. There was a decline in tourism.
  c. Shipments to the garment industry improved.
  d. There was a population influx.