To determine which objective of Thomas Jefferson for the Lewis and Clark expedition is best represented in the illustration, we would need to consider what the illustration depicts.
If the illustration shows maps, landscapes, or geographic features, it would best represent the objective of gaining knowledge of the region’s geography.
If it includes interactions with Native Americans, then it aligns more closely with learning about the territory’s Native Americans.
If it portrays routes or paths, it would indicate the goal of documenting a safe route to the Pacific Ocean.
Finally, if it shows conflict or removal of Native Americans, it would reflect the objective of forcing the territory’s Natives Americans from their land.
Assuming it is a general geographic context (like landscapes or mapping), the most fitting would likely be gaining knowledge of the region’s geography. If it showcases encounters with Native groups, then learning about the territory’s Native Americans would be the best choice.
Please clarify what the illustration shows for a more precise answer.