Fact 1: Mollusks have a circulatory system with one or two hearts that pump blood.

Fact 2: An abalone is a shellfish or mollusk.

Given the two facts above, answer the question "What has a circulatory system with one or two hearts that pump blood?" with the following options: 
- a fish
 - sharks
 - abalone
 - elephants
 - humans
 - crocodiles
 - giraffes
 - fur seals


 

   abalone      