You are presented with the question "What does a squids circulatory system pump?" and the following answer choices: 
- Mucus
 - Air
 - Water
 - Energy
 - Blood
 - Energy.
 - heat
 - oxygen

Now knowing that mollusks have a circulatory system with one or two hearts that pump blood and interestingly, a squid is also a mollusk, choose the best answer.


 

     Blood    