Answer: B. grows food and tends livestock to provide for a family.
A subsistence farmer uses land to grow food and tends livestock to provide for his family.
Explanation:
A subsistence farmer refers to a farmer that grows food crops to feed himself and his family. The crops and livestock are raised by the farmer to maintain himself and his family. This system of farming is called subsistence farming because the farmer plant crops and tend livestock to provide all the goods required by his family without any significant surplus for sale.