Answer:
A
Explanation:
You can eliminate C because you need to consult a periodic table to determine the mass (not the weight).
There are other answers you could use. The wording is awfully sloppy. Â D is an example of that. The elements part is true, the atoms part is not really true in all cases. Â For example NaCl is table salt and both the elements are ions, not atoms. Na is plus ion and Cl is minus one. B is wrong for the same reason.
I think in the end I would choose A. Â I think this is a very sly question. It is not really testing chemistry. It is testing how well you know your definitions.