Final answer:
Justin and his co-worker used conflict resolution to settle their differences at work. This method involves negotiation and finding a mutually acceptable solution that allows for collaborative progress.
Step-by-step explanation:
When Justin and his co-worker had different ideas for solving a problem at work but eventually reached an agreement to resolve their disagreement, they displayed a method called conflict resolution. This process involves addressing the conflicting parties' differences, finding common ground, and reaching an accord that is acceptable to all involved.
It is representative of a positive way to handle disagreements that occur due to various reasons such as differences in beliefs, values, opinions, and actions. Conflict resolution is preferred in a working environment because it allows the team to move forward collaboratively towards their goals, incorporating a variety of viewpoints for a richer, more inclusive solution.