In science class, Maria observes a white-colored cut flower. She sees that the petals turn red when the flower is sitting in a vase that has red-colored water. She forms a hypothesis that the color re

  

In science class, Maria observes a white-colored cut flower. She sees that the petals turn red when the flower is sitting in a vase that has red-colored water.She forms a hypothesis that the color reaches the flower through the stem. What should Maria do to confirm the hypothesis?