You are presented with the question "What converts chemical energy into electrical energy?" and the following answer choices: 
- Something in a fire alarm
 - sperm and egg fuse
 - Males and females
 - igniting fuel and oxidiser
 - The bending of a ray of light
 - basic building blocks of life
 - sensory neurons
 - mechanical waves

Now knowing that abattery converts chemical energy into electrical energy and check the fire alarm's batteries the first of each month, choose the best answer.


 

 Something in a fire alarm        