The Oregon Trail
(1) The 2,000-mile Oregon Trail was a pathway from Missouri to Oregon. (2) Though some people came on their own, many
chose to travel in wagon trains. (3) Some trains were quite large, such as the Great Migration of 1843, which had 120 wagons!
(4) Others only had a handful of wagons. (5) A number of factors determined the size of the wagon train, such as how well the
travelers got along and how fast they wanted to travel. (6) In addition, bigger wagon trains were often formed for safety and
security. (7) If a certain section of trail was known for having thieves or hostile people, for instance, the travelers would stick
together. (8) These larger wagon trains sometimes split up later once they were past the danger.

Where does this sentence best fit in the passage?

The trail was used by countless pioneers who wanted to settle out west.

OA. after sentence 5
OB. after sentence 3
OC. before sentence 2
OD. before sentence 7