Barney has a long tail. Barney has brown eyes. Barney has a pink tongue. Barney has a scar on his ear.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Barney is a cat. Which trait was made by his environment?
Possibilities:
- Barney has a long tail.
- Barney has brown eyes.
- Barney has a pink tongue.
- Barney has a scar on his ear.

Barney has a scar on his ear.