One of the major advances in psychology that occurred in the 19th century was

1886 - Sigmund Freud begins offering therapy to patients in Vienna, Austria.

answer; ok in rural area most people depend on private transportation(cars),pick up truck,donkey and buggy: ),and urban people can walk or ride public transportation,bus,train cab,uber.

it would be d). more resources must be obtained to attain that combination of goods and services