What feature identifies a sowbug?

The distinguishing feature of a sowbug is the presence of two pairs of appendages at the end of its abdomen. This anatomical characteristic is specific to members of the order Isopoda, which includes sowbugs. These appendages often help in various functions, including locomotion and reproductive processes.

Sowbugs, or pillbugs, are terrestrial crustaceans that require moisture to survive and are commonly found in damp environments. They do not possess wings, so the option indicating that they have wings for movement is incorrect. Additionally, sowbugs are not exclusive soil feeders; they primarily consume decaying organic matter, making them detritivores rather than strict soil feeders. Finally, sowbugs do not inhabit aquatic environments, as they are adapted to live on land. All of these points emphasize why option B is the correct choice in identifying a sowbug.