You are presented with the question "what has a positive impact on an animal 's ability to be a carrier for life?" and the following answer choices: 
- four limbs
 - staying frosty
 - staying isolated
 - prolactin release
 - staying warm
 - staying mad
 - coded genes
 - organic molecules

Now knowing that staying warm has a positive impact on an animal 's survival and animals that survive develop an immunity, but are also carriers for life, choose the best answer.


 

     staying warm    