Which of the following best explains why j. j. thompson's plum pudding model had to be revised?

a) atoms must have neutrons.
b) atoms have protons and neutrons in the nucleus.
c) atoms must have electrons in the nucleus.
d) atoms have protons and electrons in energy levels.

I think the correct answer is B. J.J. Thompson's Plum Pudding model had to be revised because atoms have protons and neutrons in the nucleus. He realized that aside from the electrons which are negatively charged, positive charge particles should be present to neutralize the charge of an atom.

A. it acts on all objects all the time. mark as brainliesg