Which object has the least thermal energy?

 - a bowl of oatmeal at a temperature of 28°C
 - a bowl of oatmeal at a temperature of 33°C
 - a bowl of oatmeal at a temperature of 24°C
All three bowls of oatmeal have the same mass but different temperatures. Since the 24°C bowl of oatmeal is the coldest, it has the least thermal energy.