What are the basic features of a mediation intervention? A giant in the mediation studies, Bercovitch goes beyond just proposing a definition and clarifies the eight characteristics of international mediation as follows (Bercovitch, 1992: 4-5):

1. Mediation is an extension and continuation of the parties’ own conflict management efforts.

2. Mediation involves the intervention of an individual, group or organization into a dispute between two or more actors.

3. Mediation is a non-coercive, non-violent and ultimately nonbinding form of intervention.
4. Mediation turns an original bilateral dispute into triadic interaction of some kind. 
5. A mediator enters a dispute in order to affect, change, resolve, modify or influence it in some way.
6. Mediators bring with them, consciously or otherwise, ideas, knowledge, resources and interests of their own or of the group
or organization they represent.
7. Mediation is a voluntary form of intervention.
8. Mediation operates on an ad hoc basis only.

Therefore, the correct option is C.