You are presented with the question "Feathers help what kind of animals fly and provide insulation?" and the following answer choices: - preventing heat transfer - dragons - passenger pigeons - butterflies - animals in the class Aves - airplanes - it protects them - retaining heat Now knowing that feathers help birds fly and provide insulation and class Aves is for the birds, literally, choose the best answer.
A:
animals in the class Aves