What structure do mollusks use to excrete wastes?

a. gills

c. viscera

b. nephridia

d. foot

The structure that mollusks use to excrete wastes is known by the name of nephridia. Among all the options that are given in the question, the correct option is option "b". Mollusk is the other name for shellfish. there are three varieties of shell fish present. Hatcher footed, Belly footed and head footed variety of shellfish are available.