Answer:
If slaves had knowledge, they would realize they were being treated unfairly, which would make it harder for the masters to force them to work. They would also be more likely to be able to escape or rebel.
Census is the complete count of a population, including place of residence.
The answer would be A) They wanted a strong central government
D. A primary source comes from someone who has actually witnessed the event, while a secondary source is not based off of firsthand experience.