Answer
**Answer: Carmen** The opera "Carmen" was not composed by Delibes, but by Georges Bizet, another renowned French composer. Delibes is primarily known for his ballets, such as "Coppélia" and "Sylvia", and his operas include "Lakmé" and "Le Roi l'a dit". While Bizet's "Carmen" is one of the most popular and frequently performed operas globally, Delibes' works are also widely celebrated for their melodic charm and distinct style.