The answer here would be true
C. All forms of tobacco are addictive. Tobacco contains Nicotine, which upon entering the blood stream, affects the user. After frequent uses, the user becomes addicted to the nicotine within the tobacco product.
Electricity is the manifestation of traveling currents. These currents however are unable to move unless one were to complete a "circuit" (Word you are looking for). If the circuit is not completed electricity doesn't travel.