The correct option is
C SpongillaA. Euspongia, known as Bath sponge, is a marine sponge.
B. Spongilla is the most common widely distributed fresh water sponge.
C. Cliona, the boring sponge, that destroys shells of molluscs, is a marine sponge.
D. Euplectella, known as Venus Flower Basket, is a marine sponge.
So, the correct answer is 'Spongilla'.