a thicker neck and longer tail a larger mouth and stronger jaws an increase in fur and fat an increase in height and speed
I gave my students this multiple choice question: If the climate in an area changed over time to become very cold, which change would most likely help a species living there to survive?

Only one answer is correct among these 4 choices:
- a thicker neck and longer tail
- a larger mouth and stronger jaws
- an increase in fur and fat
- an increase in height and speed

Could you tell me which one is correct?

an increase in fur and fat