You are presented with the question "Plants use what type of compounds to store energy?" and the following answer choices: 
- thermal insulators
 - It helps them survive
 - during the day
 - spring, summer, autumn, winter
 - compounds with double bonds
 - hydrogen and oxygen
 - Something with exactly eight protons
 - it helps plants in growing

Now knowing that plants use unsaturated fatty acids to store energy and among the unsaturated fatty acids are compounds with one, two or three double bonds, choose the best answer.


 

     compounds with double bonds    