Q22 - No answer is good. "B" is given as correct, but since the object is a conductor, the valence electrons are not bound to a nucleus. Yes the inner electrons will be on the side of the atom closest to the (+) rod, but the movement is from the valence electrons. Better answer, "All free electrons will move to the side of the conductor nearest the positively charged rod."
Matthew, absolutely correct, and your words are perfect. I updated the notebook. Thanks, John