You are presented with the question "what are arthropods the largest phylum of?" and the following answer choices: 
- humans
 - absorb light energy
 - converting mass to energy
 - fish
 - animals without a backbone
 - remains of prehistoric life
 - h2o
 - Earth orbiting the Sun

Now knowing that arthropods are the largest phylum of invertebrates and invertebrates are animals without a backbone, choose the best answer.


 

     animals without a backbone    