Who is often called the "father of our national park system"? o o o o a. upton sinclair b. edward bellamy c. teddy roosevelt d. john muir
I would pick D due to his influential role in writing and multiple park creations.
John Muir, his influential writings and role in the creation of multiple parks, he is often called "The Father of Our National Park System
John Muir: he's the father of national parks!