Answer:
B. Reaction force
Step-by-step explanation:
Reaction force is a team that consist of a group of people who are assigned to deal with unexpected situation in a certain area.
Since the problem that appear in the area of incident tend to be unknown, this team deal with a lot of uncertainty during the planning part of their operation. Because of this, it is important for the team to take a lot of members with different variety of skill sets in order to be able to handle unique types of incidents on a short period of time.