pushing a button to make a doorbell ring stepping on a mat to make a door open flipping a switch to turn on a light sliding a lever to turn on an electric blanket
Which is an example of electricity flowing in a circuit to produce sound?

Options:
- pushing a button to make a doorbell ring
- stepping on a mat to make a door open
- flipping a switch to turn on a light
- sliding a lever to turn on an electric blanket

pushing a button to make a doorbell ring