You are presented with the question "What do the pheromones in male dog urine used for?" and the following answer choices: 
- Animal survival
 - define boundaries
 - poison predators
 - competition
 - competing for resources
 - detract enimines
 - animal transport
 - camouflage sent

Now knowing that male dogs use pheromones in urine to mark their territory and for a male, urine markings are used to define the boundaries of their territory, choose the best answer.


 

  define boundaries       