To meet its current obligations , the United States government racks up another $ 1.46 million of debt every day . Every citizen already " owes " over $ 30,000 . By 2010 , that figure will be $ 38,000 .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason for citizens owing so much money ?
Options:
- Mortgages .
 - Student loan debt .
 - Alcoholism .
 - Gambling problems .


Student loan debt .