The correct answer is B. They found good places to farm crops.
Step-by-step explanation
In ancient times, the communities that inhabited the American continent were nomadic, that is, they did not have a stable place in which they lived but instead moved from one place to another to find resources, food, and places to live. However, once they discovered agriculture and suitable places to grow crops, they decided to settle in one place and become sedentary communities. Therefore, the correct answer is B. They found good places to farm crops.