Fact 1: Electrical current running through a wire causes that wire to heat up. Fact 2: An electrical current is a flow of electrons. Given the two facts above, what can run through a wire causing it to heat up?

Choices: I. flow of electrons II. electromagnetic energy III. flow of neutrons IV. kinetic energy V. hydrogen and oxygen VI. chemical messengers VII. flow of protons VIII. h2o
Answer:
I.