Question to you: Roundworms can be free-living or live on a what?
Options:
- (A) soil
- (B) nest
- (C) host
- (D) root
- (E) stem
- (F) habitat
- (G) food
- (H) commune.
Let's reason step-by-step:
Roundworms may be free-living or parasitic. Parasites Shortfin makos host a variety of parasitic copepods. Roundworms may be living on a host or free-living. Final answer: (C).