A “retrospective” would be an exhibit that shows the history and progression of the artist’s work, but this exhibit only shows the good parts (it “glossed over” the weaker work and omits the artist’s “dissolution,” which literally means ending, but metaphorically could mean his failure at the end). Thus, the blank needs a word that has something to do with praising. “Paean” and “tribute” are the only matches. A “paean” is generally a song or speech of praise and is used metaphorically here. “Polemic” and “tirade” both mean a long angry speech, and so do not fit the blank.” “Panacea,” which means a cure-all, also has the wrong meaning, as does “critique.”