A group of annelids that live mostly in freshwater habitats is the ______.Multiple choice question.flatwormsleechesclam wormsearthwormsroundworms

The group of annelids that live mostly in freshwater habitats is commonly referred to as "leeches."

Explanation:

1. Leeches: These are segmented worms belonging to the class Hirudinea. They are typically found in freshwater environments, such as ponds, lakes, and marshes. Leeches are known for their ability to attach to hosts and some species are blood-sucking parasites, although many are free-living and play important ecological roles in their habitats.

2. Other Options:

   • Flatworms: These belong to a different phylum (Platyhelminthes) and are not annelids.
   • Clam Worms: Typically associated with marine habitats, specifically the family Nereididae.
   • Earthworms: While these are annelids and can be found in various environments, they predominantly thrive in terrestrial habitats.
   • Roundworms: These belong to the phylum Nematoda, which is distinct from annelids.

Therefore, the answer is leeches, as they are the only option listed that is primarily associated with freshwater habitats.