The graph shows the daily high and low temperatures last week in Waterloo. On which day of the week was the difference between the high and low temperatures the greatest?
(A) Monday
(B) Tuesday
(C) Wednesday
(D) Thursday
(E) Friday

![](https://cdn.mathpix.com/cropped/2024_04_20_6027bc27089ed4fc493cg-067.jpg?height=409&width=485&top_left_y=763&top_left_x=1248)

Day of the Week
We use the graph to determine the difference between the high and low temperature each day.

| Day | High | Low | Difference |
| :---: | :---: | :---: | :---: |
| Monday | $20^{\circ}$ | $10^{\circ}$ | $10^{\circ}$ |
| Tuesday | $20^{\circ}$ | $15^{\circ}$ | $5^{\circ}$ |
| Wednesday | $25^{\circ}$ | $25^{\circ}$ | $0^{\circ}$ |
| Thursday | $30^{\circ}$ | $10^{\circ}$ | $20^{\circ}$ |
| Friday | $25^{\circ}$ | $20^{\circ}$ | $5^{\circ}$ |

Therefore, the difference was the greatest on Thursday.

ANSwer: (D)