The correct option is option A.
Before 19th century, the Great Plains were not fit for cultivation and were termed as the “Great American Desert.” Droughts were common and followed by rainy spells. The sun along with wind would dry up surface’s moisture. In these plains, European windmills were also impractical. The new windmills were designed to help the settlers on the plains. These could efficiently pump water from underground at a steady rate and could shift into the prevailing winds and functioned well in fast and slow winds.
