Answer: Brand manager
Step-by-step explanation:
The decentralized system is one of the type of organizational firm that basically managing all the operations and the functions of the firm. The decentralized system helps in taking the various types of effective and major decisions in an organization.
The main responsibility of the brand manager in the decentralized system is that it helps in adopting the various types of strategies for the purpose of achieving the given target in an organization by maintaining the brand integrity.
According to the given question, the brand manager is basically responsible for managing the overall sales management, planing, budgeting and also the total performance of the company profit.
Therefore, Brand manager is the correct answer.