Answer: The correct answer is-
(C) Closing the switch completes the circuit, making it a closed circuit.
An electric circuit is a pathway made up of wires through which electrons flow. A power source ( such as battery) provides the force (voltage) that allows the electrons to move. When the electrons reach an electric device such as a light bulb, they provide it power to work.
It includes four basic components that are: A source of energy (AC or DC), a conductor that allows current to pass through ( such as copper wire), an electric device such as bulb, and a switch ( to control the circuit)
A closed circuit is considered as a complete circuit, meaning that there is continuous flow of electrons and electrons can flow all the way around from one end of a power source (such as battery) to the other end through conductor ( wire).
The circuit is completed on closing the switch, thus, light bulbs in the circuit.
