A geographer who studies how volcanic eruptions are shaping the Earth most often uses which of the six essential elements of geography? A. physical systems B. the world in spatial terms C. human systems D. places and regions

A. physical systems

Explanation:

They study the physical systems as an example of natural changes that take places like the hurricane, cyclone earthquake, and even floods. These change the earth's surface areas and these are physical changes that are interrelated and interlinked with each other.

Answerepicenter;