To determine which objective of Jefferson's is best represented in the illustration, we would need to analyze the visual content of the illustration itself. However, based on the common themes associated with Jefferson's goals for the Lewis and Clark expedition, the objectives that might be highlighted could include:
- Documenting a safe route to the Pacific Ocean
- Learning about the territory’s Native Americans
- Gaining knowledge of the region’s geography
If the illustration depicts landscapes, geographical features, or mapping activities, it would most likely relate to "gaining knowledge of the region's geography." If it shows interactions with Native Americans, it would lean towards "learning about the territory's Native Americans." If it features a depiction of travel routes, it might represent "documenting a safe route to the Pacific Ocean."
Without the specific illustration, it's impossible to choose definitively, but you can analyze what the illustration primarily focuses on to choose the best objective representation.