Are called only for criminal matters and hear evidence against a person accused of a crime to decide if the evidence is enough to warrant a trial.
a. petit juries
b. appellate juries
c. elected juries
d. grand juries

One drawback of voluntary trade is that it a. requires two groups to use a common language b. can make one group dependent upon another for necessary goods c. doesn't occur unless there is a shortage of goods for at least one group d. forces groups to rely on themselves to produce all the goods they need