When does upward growth of cities typically occur? a. when water resources are limited b. when waste production is a problem c. when available land is limited d. when population exceeds 100,000 Please select the best answer from the choices provided A B C D

C. when available land is limited

Explanation:

Cities can expand outward if they have the space, therefore better for water resources and waste, but if there's no space to expand, the cities grow upward. Where there's no room on land, there is in the sky!

Hope this helps!

answer: oof wait

explanation: