The correct answer is B. the hollow box within a violin.
This large, flat piece of wood found in a piano produces the sound when the piano is played, the same way the hollow box produces the sound coming from a violin. The two items have the same purpose, which is to provide the instrument with sound.
Answer:
Comprehensive trials have not been completed to support the company's claim.
Explanation:
But, even if there have been no medical trials there are some shreds of evidence from personal accounts.
CONGRATS!! i have some too