Final answer:
Karen Horney's coping strategies can become neurotic and lead to alienation or a complete mental breakdown if applied rigidly and compulsively. The correct choice of option is d) mental breakdown.
Step-by-step explanation:
Karen Horney suggested that people use different strategies to cope with day-to-day problems, which can become neurotic strategies if used too rigidly and compulsively. Among these strategies are moving toward people, moving against people, and moving away from people. If an individual uses these strategies in an inflexible manner, they may become alienated from others.
Horney's ideas suggest that while these coping behaviors can be adaptive in some situations, overuse or rigid application can lead to diminished effectiveness or even a complete mental breakdown.