You are presented with the question "What do lobsters lack?" and the following answer choices: 
- heat energy
 - Stomach
 - a cuticle
 - Claws
 - backbone
 - Eyes
 - the skin
 - Chlorophyll

Now knowing that invertebrates are animals that lack a vertebral column, or backbone and lobsters are invertebrates, animals without a backbone, choose the best answer.


 

     backbone    