Fact 1: Magnetism can cause objects to repel each other. Fact 2: An object is a real-world thing. Given the two facts above, magnetism can cause what to repel each other?
OPT: (A). electromagnetic energy; (B). flow of electrons; (C). Veins and arteries.; (D). barnacles; (E). solid, liquid, gas; (F). an electron lens; (G). real-world things; (H). Electrical energy;
(G).