If added to the end of this passage, which of the following conclusions would fit best? A Unlike most other animals, the owl is a nocturnal animal. It stays active at night and sleeps during the day. But working at night poses significant challenges. After all, it's dark at night! The owl's excellent sense of sight and hearing enable it to overcome this challenge. This helps the owl hunt prey when there is less competition. B Although most animals are diurnal, some are just the opposite. They are nocturnal. Nocturnal animals have special abilities that heighten their senses. The owl and the mouse are both examples of such animals, as they use these special abilities to overcome the many challenges they must face in the wild. C Strangely, both mice and owls are nocturnal. This means they stay active at night. But because these animals are active at night, they must sleep during the day. This makes them especially vulnerable to attack from diurnal animals. D Most animals are diurnal. But some animals are just the opposite. They are nocturnal. While being nocturnal has its advantages, it also has its challenges. The owl and the mouse are good examples of nocturnal animals that use special abilities to overcome these challenges.