Matteo decided to find out if it was worth spending the money to buy bags of potting soil sold at the store. He bought one bag of potting soil and some bean seeds. At home she put potting soil in ten pots and soil he dug up from the yard in ten other pots. he planted one bean seed in each pot. After one week, all twenty seeds had sprouted and all the seedlings had two leaves. She concluded that her soil was just as good as potting soil.
What would be the best thing for Matteo to do next?
A. Repeat the experiment to see if she gets the same results.
B. Mix the potting soil with her soil and see how seeds grow in it.
C. Start watering some of the plants in each group twice as much.
D. Let the plants grow in different soil types to see if they remain healthy.
I couldn't find the subject Science.