Answer: D) The study of earth's surface and the processes that affect each other
Geography is defined as the study of places and their relationship between people and their immediate environment. It studies both physical geography and human societies.
It find out how human interact to their natural environment and impact of locations and places on the human.
Physical geography is the study of seasons, climate, atmosphere, soil, oceans and landforms, whereas human geography is the study of distribution of network of people and their culture on earth's surface.