Use the Model of Circulation in the Leg of a Canada

Use the model of circulation in the leg of a Canada goose to answer the following question. The countercurrent arrangement of blood vessels is an adaptation that allows the goose to ________.

A) minimize heat exchange between the feet and water
B) generate heat using shivering thermogenesis
C) more effectively cool off the goose in the summer
D) conserve heat in the goose's core when the goose is swimming in cold water