Answer:
vibrations of the string
Step-by-step explanation:
From the given scenario, what is responsible for the generation of sound waves from Tadeo's violin is "vibrations of the string."
This is because the vibration of the string is caused by three main factors which are
1. The tension of the string
2. The thickness of the string
3. The length of the string.
All of them work together to generate a sound wave from his violin.