Please choose the correct answer to the question: Steven went to a farm and picked a bright red tomato from a broken branch on the plant. The tomato had a rotten spot with a worm inside of it. Instead of eating the tomato, Steven decided to plant the seeds and grow new tomato plants. Which characteristic of the tomato plant is inherited and could change over several generations?

Answer1: color of the skin Answer2: size of rotten spots Answer3: length of worms inside Answer4: number of broken branches

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