Which of the following is an example of an issue of internal integration?

A) goals
B) means
C) measurement
D) group and team boundaries

Internal integration refers to the coordination and alignment of different teams or groups within an organization. Group and team boundaries, such as overlapping roles or lack of communication between teams, can create issues in internal integration. Therefore, option D is the correct answer. Options A and B are related to goal-setting and resource allocation, which are more related to external integration. Option C is related to measurement and evaluation, which is more related to the control function of management.