From the 1830s on, people hoping to settle in the Northwest followed a trail blazed by Zebulon Pike. Zebulon Montgomery Pike was an American brigadier general and explorer for whom Pikes Peak in Colorado was renamed. The correct answer between all the choices given is the third choice or letter C. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.