What roles are designated in each ASET board during the chair's absence?

In the context of the ASET governance structure, the correct response indicates that each board is organized to ensure continuity and effective leadership in the chair's absence by appointing both a chair and an acting chair. This approach allows for a clear delegation of responsibilities.

When the chair is unavailable, the acting chair can seamlessly assume leadership to maintain the board's operations without disruptions. This arrangement is vital for decision-making processes and ensures that any urgent matters can be addressed swiftly. The presence of both an appointed chair and an acting chair fosters a structured hierarchy, facilitating smooth transitions and maintaining the board's effectiveness.

The other options do not fully capture this structured delegation. Simply appointing a vice-chair would lack the robustness of having both positions defined, which could lead to ambiguity in leadership. Appointing only a temporary chair does not establish a clear ongoing leadership framework, and stating that no special roles are assigned would fail to provide necessary support in the absence of the chair. Thus, having both a chair and an acting chair ensures a comprehensive and effective leadership model within the board.