the size of its feet the color of its eyes the shape of its ears the condition of its fur
I gave my students this multiple choice question: Which of the following characteristics of an individual wolf is most affected by its environment?

Only one answer is correct among these 4 choices:
- the size of its feet
- the color of its eyes
- the shape of its ears
- the condition of its fur

Could you tell me which one is correct?

the condition of its fur