Concept:Settlements are grouped into villages and towns according to their main economic function or activity.
Explanation:A village is a rural settlement that mainly depends on primary activities like farming, fishing, or forestry.
A town is an urban settlement that focuses on non-agricultural functions such as trade, industry, administration, and services.
The type of work most people do in a place is its dominant function.
This difference in the dominant function is what clearly separates a village from a town.
Location only explains where a settlement is found.
Structure refers to the physical layout of buildings and streets.
Pattern describes how settlements are arranged over an area.
None of these factors clearly distinguishes a village from a town as effectively as the economic function does.
Answer:D. function