Answer:
A) Adding more protons to a positively charged body until the number of protons matches the number of electrons.
Step-by-step explanation:
Adding more protons to a positively charged body would only increase the positive charge and further imbalance the charge. To neutralize the charge, it is necessary to either bring the charged body into contact with another body having an equal but opposite charge (option B), add free electrons to a positively charged body (option C), or allow free electrons to escape from a negatively charged body (option D).