Concept:Settlements are ranked by size, from the smallest to the largest.
Explanation:A farmstead consists of a single farm and its buildings.
It is the smallest and most isolated type of settlement.
A village is larger than a farmstead because it contains many houses and families.
A town is larger than a village and has more services.
A metropolis is a very large city, so it is the largest in this list.
Therefore, the farmstead is the smallest form of settlement.
Answer:A. Farmstead