Please choose the correct answer to the question: A strawberry farmer finds that, after a hard freeze, some of his strawberries are still alive. Which best explains why these strawberries were able to survive?

Answer1: They have larger leaves to protect the fruit than the other strawberries. Answer2: They have different genetic variations that cause them to be more resistant to cold temperatures. Answer3: They are able to reproduce more quickly than the other strawberries. Answer4: The color of the strawberries is darker, and they maintain their temperature better than other strawberries.

Answer format: answer1/answer2/answer3/answer4
Answer: answer2