Which of the Following Situations Represents an Example of Territorial

Which of the following situations represents an example of territorial behavior?

A) Digger wasps are able to recognize the pattern of landmarks around their nests.
B) Sow bugs become more active and move around randomly if they find themselves in a dry area.
C) Gannets breed in dense colonies. Each gannet defends the area within the beak's reach of its nest, but gannets feeding at sea are indifferent to each other.
D) Troops of monkey species use well-defined, widely overlapping ranges. Troops avoid encountering each other and are aggressive if they meet.