Question

Which phrase within the arrows is an appositive phrase?

1. When trade began with the United States, the Santa Fe Trail, →a route from Santa Fe to Missouri←, became popular.

2. →A route from Santa Fe to Missouri← was a popular trade route in the United States. It was known as the Santa Fe Trail.

3. The popular Santa Fe Trail was used →as a trade← route spanning from Santa Fe to New Mexico.

Answer 1

I think, not POSITIVE, that it is 3. The popular Santa Fe Trail was used →as a trade← route spanning from Santa Fe to New Mexico. As a trade route is renamed to be Santa Fe to New Mexico. If I am wrong please let me know, thanks!