The stories of fertile soil and abundant rainfall attracted American settlers to the Oregon Trail
Option: (D)
<u>Explanation</u>:
The Oregon trail was famous at the time for having soils that were fertile and rainfall in abundance which made it the perfect place for American settlers to move to.
If the stories were true or false is not known, but it served as a good catalyst to promote the moving of the American settlers to the Oregon trail more than the other options given in the question.
Thus, Option D, that is, the 'stories of fertile soil and abundant rainfall' is the correct answer.
