Students use the same ruler-drop method to test the effect of a distraction. Smaller falling distances correspond to shorter reaction times. The table shows the results for one student.
| Condition | Distance in trial 1 in cm\mathrm{cm}cm | Distance in trial 2 in cm\mathrm{cm}cm | Distance in trial 3 in cm\mathrm{cm}cm |
|---|---|---|---|
| No distraction | 18 | 20 | 22 |
| With distraction | 24 | 26 | 28 |
Which conclusion is supported by these results?
Distraction increased every driver’s reaction time, and the increase was exactly 30%.
Distraction decreased this student’s reaction time, but the decrease was not necessarily 30%.
Distraction decreased every driver’s reaction time, and the decrease was exactly 30%.
Distraction increased this student’s reaction time, but the increase was not necessarily 30%.