D
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
In the summer, the Arctic fox's fur is dark gray or brown. In the winter, its fur is white. The changes in color enable the fox to

### Choices:
A. stay dry in the winter.
B. hunt for food at all times.
C. stay warm in the summer.
D. blend in with its surroundings.

### Answer:
