the author uses flashback in order to reveal a. the mother's hospitable character. b. what happened to the narrator earlier. c. how skilled the vendors are at selling. d. show a typical day in kathmandu.

The author uses flashback in order to reveal -The how skilled the vendors are at sellingFlashback is a technique that alters the chronological order of a story. It connects different moments and takes the action to the past. It is usually used to remember past events and develop a character's portrayal.In the story "Secret in Slovakia," since Gertrude is dead, the author uses flashback to provide background information about her life, personality and the narrator's relationship with her.Learn more about flashback https://brainly.com/question/16645020#SPJ4