Answer:
Collaboration.
Step-by-step explanation:
Collaborative skill is the way which is used to achieve a common goal by working together. In this process, the whole team or the group comes together and share their own ideas and thoughts.
Collaborating is a bit long process because it involves the participation of every member and individual of the group.
In the given circumstance, DeShawn, who is the team leader had to make a straightforward decision in an hour, so the style which he should least use in this situation is "Collaboration".
So, the correct answer is "Collaboration."