Which of These Is an Example of Homeostasis

Which of these is an example of homeostasis?

A) Birds,bats,and butterflies all have wings.
B) Venomous coral snakes and harmless scarlet kingsnakes both have bands of red,yellow,and black.
C) When a dog feels hot,it hangs it tongue out and pants.
D) Hummingbirds prefer to feed on nectar from red flowers.
E) A shark can detect even minute quantities of blood in the water.