read the following hypothesis about why a chicken bone becomes bendy after being soaked in vinegar:

the bone can bend because the acid in the vinegar has removed the calcium that made it hard.
what evidence would support this hypothesis?
a. observing that a bone placed in a freezer becomes more rigid
b. observing that a bone placed in a beaker of acid becomes bendy
c. observing that a bone placed in a beaker of water becomes bendy
d. observing that a bone placed in a mixture of baking soda and water becomes more rigid