Synonym of Catharsis will be:

Explanation

The synonym of "catharsis" that best fits the given options would be "Outlet for strong emotions."Here's an explanation of the options:Sudden: This term refers to something happening quickly or unexpectedly. While catharsis can sometimes be sudden in terms of the release of emotions, it does not capture the essence of the emotional release itself.Outlet for strong emotions: This option accurately represents the concept of catharsis. Catharsis refers to the release or purging of pent-up or intense emotions, often through artistic expression, such as through writing, painting, or acting.Anti-climax: This term refers to a disappointing or underwhelming event or situation that occurs after building up high expectations. It does not convey the meaning of catharsis, which is a positive release or relief of emotions.Informal discussion: This option does not relate to catharsis. An informal discussion refers to a casual conversation or exchange of ideas, which is not directly connected to the emotional release aspect of catharsis.Therefore, the best synonym for catharsis among the given options is "Outlet for strong emotions."