The right to a speedy trial
that means that the government can't just lock you up forever while 'waiting' to give you a trial
Most slaves lived on plantations, but the plantations were not very big: they rarely had more than 100 slaves. The best answer is then A. lived on plantations with 20 or more slaves.
The Articles of Confederation were essentially an early version of the US Constitution that were created as a governing agreement among the 13 original colonies/states to fight the Revolution and establish some limited federal power.
Hope that helps! :)