Answer:
1. introduction
2. a central idea or source of completeness
Step-by-step explanation:
"The Mustache" is a short story that tells the story of a boy who ends up hearing a very personal and intimate statement from his grandmother because of the mustache he was wearing.
The short story presents itself with a very strong and well-written introduction that fulfills its role of presenting the story efficiently. In the introduction, we learned why the boy decided to wear a mustache, how he feels about the mustache and why he is going to visit his grandmother.
At the end of the story we have the presentation of the central theme of the whole narrative, in addition to perceiving a sense of completeness, when the boy after reflecting on everything that happened decides to shave his mustache and leave this whole story behind.