What did pythagoras discover in his most famous musical experiment on the acoustics of strings
a. new ways to make stringed instruments
b. perfect imtervals
c. how sound was created
d. mirror intervals

B. Perfect intervals

Explanation:

Pythagoras was a Greek philosopher that made several mathematical and scientific discoveries. He studied the Greek music to try to understand the notes and scales and he noticed that when strings have the same length, they sound consonant. This was called a perfect interval. According to this, what Pythagoras discovered in his most famous musical experiment on the acoustics of strings is perfect intervals.

B would be your answer hope this helps