I’m not sure but I think it’s B
Explanation:
One is amplitude, which is the distance from the rest position of a wave to the top or bottom. Large amplitude waves contain more energy. The other is frequency, which is the number of waves that pass by each second. If more waves pass by, more energy is transferred each second.
The answer is it has 4 electrons. If an atom is neutral than the electrons and protons will be equal.
Its b because it explains it better than a waterfall does