This illustration shows a kind of animal that is a free-living organism.
What is the common name of the group that contains this organism?
A.
ribbon worms
B.
arthropods
C.
flatworms
D.
roundworms
What is the common name of the group that contains this organism?
A.
ribbon worms
B.
arthropods
C.
flatworms
D.
roundworms