If the type of departmentalization used by an organization tends to emphasize departmental units rather than the organization as a whole and decision making is slow, then these would be weaknesses indicative of departmentalization

This is functional departmentalization. This concept places every task in its own functional unit specific to the tasks they complete. The problem is that this tends to bog the company down in bureaucracy and slows down the overall decision-making process.

Iam pretty sure it's d hope this