You are presented with the question "What uses saturated fatty acids to store energy?" and the following answer choices: 
- the Sun
 - peachleaf willow
 - Conifers
 - killer whales
 - perennials
 - generators
 - passenger pigeons
 - light bulbs

Now knowing that animals use saturated fatty acids to store energy and killer whales are social animals, choose the best answer.


 

    killer whales     