Fact 1: Earthworm burrows help aerate soil, which is also good for plants.

Fact 2: An earthworm has five hearts.

Given the two facts above, answer the question "What does the animal that burrows to help aerate soil have?" with the following options: 
- Energy
 - Five hearts
 - critical organs
 - resistance
 - Energy.
 - food and shelter
 - fur and fat
 - four limbs


 

  Five hearts       