Which two characteristics of settlements are most closely connected to Walter Christaller's central place theory?

a. the size of a settlement and the services it can offer

b. the income per capita of a settlement and its cost of living

c. the size of a settlement and its income per capita

d. the income per capita of a settlement and its gross domestic product

The two characteristics of settlements that are mos closely linked to Walter Christaller's central place theory are (A) the size of a settlement and the services it can offer and (b) the income per capita of a settlement and its cost of living.

Central Place theory refers to a geographical theory where in an urban system, the number size and location of human settlements matter in economy.