In the modern model of atom each item is composed of three major subatomic particles. State the charge associated with each type of subatomic particle contained in the nucleus of the atom

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

Are there any options that could alot..

Ijust took the quiz. their is no coefficient needed. : )