Answer:
The grandchild is the correct answer.
Step-by-step explanation:
Tío Nano was written by Mexican-American author Lionel G. Garcia, who was born in San Diego, Texas, and most of his work (as the one mentioned in the question) explore topics related to Hispanic story telling tradition and the Mexican American experience in the south of Texas. The story is narrated by the grandchild who remembers many of the uncle's characteristics as well as his costumes.