The question was rigged in favor of Democrats...
😁 They're trained since birth to believe the largest part of the budget is Defense, whether it is or not.
I looked up some numbers. Medicare in 2010 comes to about $451 billion, Defense about $719 billion, and interest on Treasury debt securites at about $425 billion. In 2015, Medicare is estimated at $652 billion, Defense at $684 billion, and interest at $888 billion.
Now, if you throw ALL mandatory human resources into the mix, including Social Security, Medicaid, income security, and the rest, the 2010 number is $2.18 trillion and 2015 is $2.5 trillion.