You are presented with the question "What produces both eggs and sperm?" and the following answer choices: 
- Plant reproduction
 - sub-units of species
 - gastropod shells
 - an individual mature sponge
 - Microscopic organisms
 - members of their own species
 - peachleaf willow
 - seed dispersal

Now knowing that adult sponges produce eggs and sperm and an adult is mature, fully developed, choose the best answer.


 

    an individual mature sponge     