The correct answer is B. Had a complex society with separate settlements and different rulers.
Explanation:
Olmec civilization is known for the massive stone heads they carved in large basalt boulders. These heads are different. They are not copies but each head has its own distinctive details. This is due to the fact that they were carved as portraits of powerful individual Olmec rulers, probably to commemorate their deaths.
Agriculture and specialization made it possible for humans to give up their nomadic lifestyle and settle in one place. This will eventually lead to making a civilization.
