If aswitch is used to start the flow of current in an object that has fuses that blow, then aswitch is used to start the flow of current in what?

Answer choices:
- Ocean currents
 - something with fuses.
 - Veins and arteries.
 - circulatory systems
 - Current date
 - Batter switch
 - Earth orbiting the Sun
 - Basic units of the plant body.

 

  something with fuses.        