Fact 1: Adult sponges produce eggs and sperm.

Fact 2: An adult is mature, fully developed.

Given the two facts above, answer the question "What produces both eggs and sperm?" with the following options: 
- Plant reproduction
 - sub-units of species
 - gastropod shells
 - an individual mature sponge
 - Microscopic organisms
 - members of their own species
 - peachleaf willow
 - seed dispersal


 

    an individual mature sponge     