【正确答案】 B

【答案解析】参看原文Hundreds of employees with access to high-security areas at 15 U．S．airports have been arrested or indicted by federal law enforcement officials for using phony Social Security numbers，lying about criminal convictions or being in the United States illegally．可见，数百名机场雇员被逮捕的原因有：using phony Social Security numbers(使用假冒的社会安全号)；lying about criminal convictions(隐瞒犯罪事实)、being in the United States illegally(非法留居美国)。