Which simple experiment could be conducted to show an example of how lightning is created? a) rub a balloon so it picks up extra electrons from the sweater or your hair and becomes slightly negatively charged. b) rub a balloon filled with air on a wool sweater or on your hair. then hold it up to a wall. c) connect the positive pole of an electrical source to the negative pole, so you create a circuit. d) walk across a carpet, shuffling your feet and touching something made of metal.