How does jing-mei "win" the disagreement over the piano lessons?

a .she appeals to her father, who takes jing-mei's side.
b. she shocks her mother by mentioning the dead twin babies.
c. she agrees to play the piano in a talent show.
d. she asks her mom to give the piano to old chong as a -you present.

The answer here is D. She asks her mom to give the piano to Old Chong as a thank-you present. We know this because Jing-mei wanted to show her gratitude to Mr. Chong. So with her mother's permission she decided to give to her old almost deaf teacher the piano as a present. I know this is going to help you 

Monophony monophony means music with a single "part" and a "part" typically means a single vocal melody, but it could mean a single melody on an instrument of one kind or another.( just a short note ) : )hope it