Answer:
b. Cross-functional teams
Explanation:
Option A is wrong because the team is not permanent. They have to change the team whenever it is needed.
Option C is incorrect because no one directs in that team to do anything.
Option D is also wrong because the team is not centralized at all. Many people from many departments are working together.
Option B is correct because the cross-functional team states that people from various departments work together to achieve the organizational objective.