Answer and Explanation:
The purpose of the Grand Jury is to allow ordinary citizens, who represent the most diverse communities in a country, to have the opportunity to participate in legal decisions and processes, evaluating, judging and studying a person accused of a crime and deciding his guilt.
This system has advantages and disadvantages. The advantage lies in the fact that the jury allows 23 people to evaluate the case, which generates a better evaluation than that made by just one person. The disadvantage is that the Grand Jury promotes a large economic expenditure on structures and advice, in addition to selecting people who have no legal knowledge and can promote errors.