You are presented with the question "What is used to attract birds to flowering plants?" and the following answer choices: 
- cellulose
 - Collagen
 - chemicals
 - energy
 - seeds
 - a chime
 - nectar
 - hormones

Now knowing that nectar is used for attracting pollinators by plants and birds are flowering plant pollinators, choose the best answer.


 

       nectar  