Answer:
It is the most recent idea of the atom and it is proved to be true
Explanation:
Its the answer b, because oil has a great density, therefore, when you mix them together the oil will be below and the above of it.
Pulled apart (moved with the magnetic force)
The independent variable is "independent" because its variation does not depend on the variation of another variable in the experiment/research project. The independent variable is controlled or changed only by the researcher. This factor is often the research question/hypothesis behind the outcome of the experiment.