PLEASE HELP
2 All the years that have passed have not dimmed my memory of that first glorious autumn. The new country lay open before me: there were no fences in those days. Sometimes I followed the sunflower-bordered roads. Fuchs told me that the sunflowers were introduced into that country by the Mormons; that at the time of the persecution, when they left Missouri and struck out into the wilderness to find a place where they could worship God in their own way, the members of the first exploring party, crossing the plains to Utah, scattered sunflower seed as they went. The next summer, when the long trains of wagons came through with all the women and children, they had the sunflower trail to follow. I believe that botanists do not confirm Fuchs's story, but insist that the sunflower was native to those plains. Nevertheless, that legend has stuck in my mind, and sunflower-bordered roads always seem to me the roads to freedom.

The narrator uses legend of the Mormons to explain
A) why the Mormons left Utah.
B) why there were no fences at that time.
C) how he found his way through the countryside.
D) how the sunflowers came to line the sides of the roads.

According to the given excerpt, we can see that the narrator talks about the events which happened during the "glorious autumn" and how the sunflowers came to the side of the road.

As a result of this, we can see that the narrator makes use of the legends of the Mormons in order to properly explain how the sunflowers came to line the sides of the roads.

Therefor, the correct answer is option D.