Aswitch is used to start the flow of current in an electrical circuit, and electrical circuits have fuses that blow. Given these facts, a switch is used to start the flow of current in what among the following options:
- 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.       