Answer:
D). Resist change.
Step-by-step explanation:
The 'resistance to change' is exemplified as one of the most significant feature of self-concept which implies that humans as individuals attempt to resist or repel the occurring change which they perceive as a threat to their existing authority or position.
As per the question, the 'resistance to change' aspect of self-concept has been displayed here as the dogged action taken by professional athletes to 'past their prime' which they discern or perceive as threat to their position. Thus, they attempt to resist the befalling change. Therefore, option D is the correct answer.