The ancestor of the modern trombone is the:
O A. cornetto.
O B. sackbut.
O C. slide trumpet
O D. shawm.

The correct/validate asnwer is B. sackbut.

Explanation:

So basically, A sackbut is a just a type of trombone that was from the Baroque and Renaissance eras, it was used more in the Renaissance era to create music. This trombone is distinguished by a telescopic "slide" which is just used differenciate the length of the tube, in order to change pitch. The name of it can also be translated to "push-pull", the actions you do while using the trombone.

Brainliest please, i need a few more :D

i dont think it is true