Which statement about muskrats is true?

• A. They are aquatic but primarily eat fish
• B. They do not eat vegetation
• C. They are terrestrial and feed on seeds
• D. They are aquatic animals and primarily eat vegetation

Answer: (D)

Muskrats are adapted to life in wetlands and rely on vegetation for most of their food. They are semi-aquatic rodents that spend a lot of time in or near water, where they feed on aquatic plants like cattails, reeds, water lilies, and other pond vegetation. While they may occasionally eat insects or small invertebrates, their diet is primarily plant-based. That combination—an aquatic lifestyle with a vegetation-heavy diet—makes the statement about being aquatic animals that primarily eat vegetation the true one. The other ideas conflict with what muskrats typically eat (not fish as a main staple, not terrestrial seed-based feeding) and with their wetland habitat.