Final answer:
John Muir and Theodore Roosevelt were key figures in the Conservation movement, with Muir focusing on wilderness preservation and Roosevelt on resource protection.
Step-by-step explanation:
Some of the important figures during the Conservation movement were John Muir and Theodore Roosevelt. John Muir, the founder of the Sierra Club, was a pivotal figure in the preservationist faction of the movement, advocating for the inherent value of wilderness areas, such as California's Sierra Nevada Mountains. President Theodore Roosevelt, influenced by conservationists like Muir and the utilitarian perspective of Gifford Pinchot, made significant contributions to national conservation by supporting the establishment of numerous national forests and parks, thereby ensuring the protection of natural resources for public use.