Which of these operas was not written by Wolfgang Amadeus Mozart?

The opera "La traviata" was not written by Wolfgang Amadeus Mozart. "La traviata" is an opera in 3 acts by Giuseppe Verdi. It is set to an Italian libretto by Francesco Maria Piave. It is based on "La Dame aux Camélias", a play adapted from the 1848 novel "The Lady with the Camellias" by Alexandre Dumas. The opera was originally titled "Violetta", after the main character.

"La traviata" tells the story of the tragic love between the courtesan Violetta and the romantic Alfredo Germont. Played out against the hypocrisy of upper-class fashionable society, Alfredo and Violetta's love threatens to shame his family. Alfredo's father directly asks Violetta to forgo her love and relinquish her one chance at happiness. Violetta decides to submit to the request and her act of self-sacrifice will end with her paying the ultimate price.

"La traviata" premiered in Venice at La Fenice opera house in March 1853. It is an opera that is set entirely indoors and has an intimate focus, full of tender lyricism. The character of Violetta dominates the work and her music changes as she develops through the drama. She moves from a hectic being to a spiritual one.