Answer:
The four items are;
1) Nail, 2) Screw, 3) Key, 4) Scissors
Explanation:
The given electric circuit consist of two batteries that provides electromotive force to help transfer electrons and result in the flow of an electric current when the circuit is completed by providing a conducting path through the crocodile clips. By dropping either of the nail, screw, key or scissors, onto the crocodile clip, the circuit is completed and current is allowed to flow through the circuit, passing through the light, causing it to turn on.
