Answer:
Option: D. Conditions were not suitable for the kind of farming done at that time.
Step-by-step explanation:
In the early 1800s, there was little settlement on the Great Plains because settlers did not think it was good land for farming. The Plains was dry and flat with an extremely hot and cold climate which did not encourage them to move to a new place to settle. The Homestead Act of 1862 helped the settlers to move to the West because the government was providing land at a low price.