Explanation:

In an all-channel network, communications flow upward, downward and laterally among all members of the group. This pattern of communication supports an egalitarian, (equal, unrestricted) participative culture and fosters (promote, cultivate) cross-functional efforts.
The all-channel network is best if you are concerned with having high member satisfaction.
The circle network and the all-channel network are more decentralized in that there is freer communication among the various members. In the circle network, each member can communicate with the individual on either side. The all-channel network is the most decentralized of the networks; each member can communicate with any other member.