The correct option is C.
Plate tectonic theory explains the structure of the earth's crust and the many phenomena that are associated with it. This theory enables the scientists to know that there are movements in the interior of the earth which are responsible for volcanic eruptions and earthquakes.
It’s B, they sometimes do follow the borders of countries
Topographical map has markings to show points of elevation like hills and mountains.
What are you asking, for the def??
