It Defines an Area for Gathering Food, It Ensures an Adequate

It defines an area for gathering food, it ensures an adequate food supply, it provides an area for meeting and caring for young, it provides an escape from enemies, it provides an advantage in fighting enemies, it helps in the regulation of population density, and helps regulate the spread of disease. What do these issues refer to?

A) How humans use territory purposively.
B) The factors that can create a perception of crowding.
C) The reasons why territory is important.
D) The issues that seem to affect how we react to territorial invasions.
E) None of the above.