Which of the following communication network structures has the highest centralization? - Wheel - Circle - All channel

The answer is: Wheel

In this type of communication network, The leader of the group is the only one that have the authority to receive and spread the information about the projects. (this mean that it has a really high centralization)

One advantage of wheel network is that it's really direct an efficient. But, the disadvantage is that wheel network structure is almost impossible to use in organizations with large amount of members and doing large scale operation.