Physical geography is primarily concerned with which of the following?

Physical geography focuses on the analysis of the earth's physical features and processes. This branch of geography examines natural elements such as landforms, climate, vegetation, soils, and hydrology, and how these aspects interact with each other and influence the way humans inhabit the earth. The study involves understanding processes such as weather patterns, erosion, and the formation of different landforms.

This focus differentiates physical geography from other areas such as urban development, which is concerned with human-made environments and infrastructure, or human geography, which explores cultural aspects and how people relate to their environment. Economic systems and resource management also fall outside the scope of physical geography, as they are more aligned with human geography and economics. Thus, the emphasis on physical features and processes makes this answer the most accurate representation of what physical geography encompasses.