The part of the atom that accounts for electricity is the electron. The correct option among all the options given in the question is option "A".The electrons of an
atom carry the negative charge and are also considered as the lightest
subatomic particle that is stable in nature. Electrons are present in the orbital’s
that surround the nucleus of an atom. The further the electron from the
nucleus, the electrons attachment with the atom loosens. This sometimes allows
the electrons to slip out.