Answer:
A. He gave land to settlers in exchange for harvested crops
Step-by-step explanation:
During the presidency of Thomas Jefferson, Farming and mining were among the main sectors that contributed the most to United States' economy. But at the time, United States did not have enough people to take care the agricultural operation in some key area.
This was the reason why he created a policy to gave land to settlers in exchange of harvested crops. He wanted to indirectly develop the neighborhood around the land and turned them into an efficient agricultural fields.