Answer:
I can't tell if you're joking (no disrespect), but it's obviously 3
Explanation:
Direct democracy would be extremely costly because people would have to vote on every single thing and this would cost time and money to ensure everyone has voted. It couldn't be resolved in early times, but maybe with the age of technology, you could surpass that by having everyone vote online or something similar.
A serf is an agricultural laborer bound to the land of the nobility they work for (part of feudalism). It has been used throughout many civilizations up until about the 20th century.
The answer would be: Sixth
The first Amendment is:
First: Freedom of speech, religion, or press
Second: The right to bare arms
Third: Housing of soldiers
Fourth: No unreasonable searches (meaning warrant an such)
Fifth: Protection of rights life, liberty, and the pursuit of happiness
Sixth: Right to trial in criminal cases
Seventh: Rights in civil cases
Eighth: No excessive punishments
Ninth: Other rights
Tenth: Undelegated power kept by the states and people
Hope this helps! :)