Nick is conducting a controlled experiment to test whether music daisies grow faster. below are the steps to nick's experiment: 1. plant daisies in two separate flowerpots. 2. place flowerpot 1 in a green room with music. 3. place flowerpot 2 in a similar green room without music. 4. give the daisies the same amount of food and water each week. 5. measure the growth of the daisies. 6. draw conclusions based on the data collected. which is the experimental group in nick's experiment (which group did the variable affect)?