"C. <span>With a lot of daily practice" would be the only option from the list that is a sentence fragment, since there is no subject and it is unclear what exactly is being referred to. </span>
Answer: In the West, Americans found a lot of land to expand, new species of plants and animals, and access to the Pacific Ocean. Because of their access to the largest body of water on the planet, international trade was possible (but wouldn't begin for another 75 or so years, assuming that this is in the mid-1800s).
They were not allowed to leave and so they had to stay
