Answer: (A) Functional departmentalization
Explanation:
The functional departmentalization is one of the type of departmentalization in which the the departments are get organized according to the specific function in an organization.
The main importance of the departmentalization is that it facilitates the division of work and also responsibility according to the specific department and as it make the task more effective and easy.
Therefore, jonamser bank basically follow the functional departmentalization as it helps in the division of department such as, human resource, financial department and the marketing department.