Which of the following statements best describes the journey westward in the mid-1800s?
it was extremely slowgoing, but the trails were easy to cross.
it took a long time and included a number of difficult obstacles.
it took a short time but included a multitude of challenges.
the obstacles were so difficult that few pioneers made the effort.

I believe the answer is: It took a long time and included a number of difficult obstacles.

During that period, sailors still completely blind regarding the position of each countries and the route that they should take to reach their destination. Since they had to do several trial and error, their journey took a long time and they often times had to face difficult obstacles such as storms in the middle of the sea, lack of supplies, or even ice berg.

Option: It took a long time and included a number of difficult obstacles.

Explanation:

The Journey to the westward in the mid-1800s done with trail wagons pulled by a team of oxen or mules. The trail was difficult because it took months to reach their destiny. On the way, pioneers cross rivers, wilderness, struggled with climatic conditions, fought Native Indians. These pioneers also struggled with the lack of water, diseases, snake bites that caused the death of some of them.

i think it is d korean