Explain how a graphical analysis can be used to explore the relationship between any two scientific variables.

A graphical analysis can be used to explore the relationship between any two scientific variables by showing numerical data through a graph, which is an easier and more vivid way to interpret results, compared to reading a table of numbers.

D. electrons

Explanation:

Chemical bonds occur as a result of electrons (negatively-charged subatomic particles) being transferred among atoms. The transfer happens when electrons are being stolen or shared from an atom to another. The reason behind this is because atom's atomic shells are naturally inclined to be full. Thus, if one atom has extra electrons, that atom will most likely share his electrons to another atom lacking in it.