What amount was allocated by the Foreign Operations Appropriations bill in FY2001 for counter-terrorism training in Yemen?

The correct answer reflects the actual amount allocated by the Foreign Operations Appropriations bill in FY2001 specifically for counter-terrorism training in Yemen, which was indeed $4 billion. This funding was part of a broader effort to enhance security and counter-terrorism capabilities in countries considered vital to U.S. interests at the time, including Yemen. The allocation underscored the importance placed on training and resources directed toward combating terrorist threats, particularly in regions experiencing unrest and rising extremism.

While the other amounts mentioned may seem plausible considering the scale of U.S. foreign aid and military assistance during that period, they do not accurately represent the specific budgetary allocation intended for counter-terrorism training efforts in Yemen for that fiscal year.