单选题Undocumented workers became the target of “Operation Safe Travel” because _____.A evidence was found that they were potential terroristsB most of them worked at airports under threat of terrorist attacksC terrorists might take advantage of their illega
题目
单选题
Undocumented workers became the target of “Operation Safe Travel” because _____.
A
evidence was found that they were potential terrorists
B
most of them worked at airports under threat of terrorist attacks
C
terrorists might take advantage of their illegal status
D
they were reportedly helping hide terrorists around the airport