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Answer:
Option a. altruism is correct.
Step-by-step explanation:
Altruism is "the belief in or practice of disinterested and selfless concern for the well-being of others" (More detail in attached info graph)
Moreover, Yalom's eleven Therapeutic Factors are: (More detail in attached info graph)
- Instillation of hope
- universality
- imparting information
- altruism
- the corrective recapitulation of the primary family group
- development of socializing techniques
- imitative behavior
- interpersonal learning
- group cohesiveness
- catharsis
- existential factors