Which of the following describes the best way to graph the data to clearly compare whether older or younger leaves carry out photosynthesis more rapidly? -A bar graph that compares the mean ET50 of the five trials with young leaves on one bar, and the mean ET50 of the five trials with older leaves on another bar.
-A line graph that shows the ET50 of each trial on the x-axis, with the data for young leaves plotted in one color and that for older leaves in a different color.
-A line graph that shows the ET50 of each trial on the y-axis, with the data for young leaves plotted in one color, and that for older leaves in a different color.
-A bar graph that shows all 5 trials with a bar for the ET50 of each trial, using different colors for the young leaves and the older leaves.