You are presented with the question "What has a range of sexual reproductive systems?  " and the following answer choices: 
- Computer systems.
 - Most plants
 - animals
 - Roundworms.
 - mammals
 - Art reproductions.
 - insects
 - Stuffed toy bears.

Now knowing that roundworms make up the phylum Nematoda and within the Nematoda, a range of reproductive systems occur, choose the best answer.


 

    Roundworms.     