Question

which is an example of an anatomical adaptation in emperor penguins?
a short, stiff tail that helps them move through the water
breading during the summer when it is warmer
huddling together in the winter and rotating to keep warm

Explanation:

Anatomical adaptations are physical features of an organism. A short, stiff tail is a physical structure (anatomical). Breeding during summer is a behavioral - timing adaptation. Huddling is a behavioral - social adaptation.

Answer:

a short, stiff tail that helps them move through the water