Which characteristic is common to both segmented worms and roundworms?

A.

a segmented body

B.

a flat body

C.

a long, slender, round body

D.

nostrils

I believe the answer would be C. Because all worms normally have round bodies, and yes, they can be slender. They also don't really have nostrils, they can breathe through their skin even though they don't have lungs. So C. would be the best answer.