If you put a pencil in a cup of water, it looks as if it is bent and larger in the water. This is because waves
A) can reflect off the surface.
B) are absorbed instead of reflected.
C) bend around a barrier, like light does.
D) change direction when they change mediums.

Where is the graph ?

Answer    "a salt" would be the best answerexplanationsalts can be defined as ionic compounds that are neither acids nor bases. nacl is an example of a salt, and its ionic.an enzyme is an organic compound which is covalently bonded, not ionically bonded.acids are generally held together by covalent bondsan element does not need any bonds to exist

Iam pretty sure that the answer is d