You are presented with the question "Marine animals find these to be a great source of food:" and the following answer choices: 
- grain
 - nutrient
 - sponges
 - Energy.
 - sea vents
 - sodium
 - Energy
 - fungi

Now knowing that sponges are a source of food for many species of fish and fish and other marine animals abound here, choose the best answer.


 

   sponges      