Final answer:
Developing coping mechanisms is an example of maintenance in neo-analytic theory, as it serves to manage stress and uphold one's established identity, in line with Erikson's theory of psychosocial development.
Step-by-step explanation:
In the context of neo-analytic theory, an example of 'maintenance' would likely refer to behaviors and processes that support an individual's existing sense of self and personal identity. Given the options provided, C. Developing coping mechanisms can be seen as an example of maintenance. Coping mechanisms help individuals manage stress and maintain psychological stability, which aligns with maintaining one's existing identity and belief systems. When discussing identity formation, Erik Erikson's theory of psychosocial development suggests that adolescents face the task of identity versus role confusion. Here, the primary challenge is developing a strong sense of self and personal identity. In this vein, D. Establishing a strong sense of identity would also be closely related to maintaining one's sense of self once it has been established.