Answer:
The correct option is;
It was possible to learn a trade, hire themselves out, and make enough money to eventually buy their freedom
Explanation:
Of the slaves that were put to work, some worked on other forms of agriculture aside from cotton plantations, such as tobacco, corn and livestock farming, while several slaves worked on skilled jobs and as laborers in the Southern cities with some being able to buy their freedom with the amount of money they were able to save while working, to the extent that there were some free black populations in the cities of the South.
These two researcher obligations, wherein the researchers make sure that the participants are told about the true nature of the study before they leave and they must make sure that the participants do not feel bad about their behavior, are referred to as debriefing and protection from harm.
