The correct answer is:
b. Farmers can support more specialists due to surplus food.
Settled farmers generally have food surpluses, which allows for a division of labor. This surplus can support a population that isn't solely focused on food production, enabling the development of various specialists in areas such as trade, craftsmanship, and administration. In contrast, nomadic groups usually need most of their members to focus on subsistence activities, leaving less opportunity for specialization.