cats that eat mice cows that graze on grass pigs that form large herds chickens that lay large eggs
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which is an example of an organism that has been selectively bred for a particular genetic trait?
Possibilities:
- cats that eat mice
- cows that graze on grass
- pigs that form large herds
- chickens that lay large eggs

chickens that lay large eggs