What do scientists think about the common ancestor of whales and hippos? (1 point) O The animal is still alive today.
O The animal had two limbs.
The animal lived millions of years ago.
The animal lived in water.

Idont really know sorry

B? i feel like this is a trick  

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