The correct answer is: Supervision
Rationale: This is the key definition of the supervisory role: it is between non-managerial and managerial, acting as an information filter and overlap (since supervisors both do operational work and fulfil some managerial functions at a low level).
Middle line and junior management are higher, since they are already managerial positions.
Employee communications is a process, not a role, and is in any case much wider than managerial/non-managerial communication.
