According to the dual-process model of coping, what coping behavior includes mastering tasks that had been taken care of by the deceased and developing a new identity?

The dual-process model is a concept of oscillation in which Stroebe and Schut, argues that healthy grieving leads a person to involve or engage in oscillating between restoration-oriented and loss-oriented coping.

Restoration-orientation: The term restoration-orientation is defined as the process of coping with different issues associated with secondary changes arises due to the loss, for example, family demands, financial and therefore adapting with these issues. It involves a process through which an individual is engaged in endurance by reconstructing his or her perspective by replacing the grief.

In the question above, the statement signifies the "restoration-oriented" process.