Darius is observing a family of geese, which includes a male goose, female goose, and several goslings. When a dog approaches the geese, the male goose hisses at the dog and flaps its wings threateningly. Is the behavior of the male goose an example of an adaptation? *

The behavior of the male goose is NOT AN EXAMPLE OF ADAPTATION.
Adaptation refers to how an organism change its behaviors, structure or function in order to be able to cope successfully with a new change in its environment.
The behavior of the male goose is an example of the territorial nature of male geese and their readiness to defend their family anytime they feel threatened. Male geese normally have well defined territory which they defend at all time from other male geese, other animals, humans and their pets. Male geese generally are very protective of their partners and offspring.