Answer:
Jac is correct because a molecule has at least two atoms bonded together and all compounds have at least two different atoms bonded together.
Step-by-step explanation:
Molecules are formed by chemically joining of two or more atoms but compounds are formed by two or more different atoms.
Thus, all compounds are molecules but all molecules are not compound because compounds are formed by different atoms
Example of molecules are
and examples of compounds are

Hence, Jac is correct because a molecule has at least two atoms bonded together and all compounds have at least two different atoms bonded together.