Answer
**Answer: Sagan's Alter Ego** Françoise Sagan's semi-autobiographical novel, "Bonjour Tristesse," features a young protagonist named Cécile who embodies many of Sagan's own experiences and perspectives. Cécile's character serves as a reflection of Sagan's personal struggles, her complex relationships with family and lovers, and her disillusionment with society. Through Cécile, Sagan explores themes of existential angst, moral ambiguity, and the search for meaning in a world marked by transience and uncertainty.