1. **Problem Statement:** We need to find the day with the greatest difference between the maximum and minimum temperatures from the given data. 2. **Formula:** The difference in temperature for each day is calculated as: $$\text{Difference} = \text{Maximum Temperature} - \text{Minimum Temperature}$$ 3. **Calculate Differences:** - Monday: $20 - 15 = 5$ - Tuesday: $32 - 28 = 4$ - Wednesday: $28 - 20 = 8$ - Thursday: $30 - 24 = 6$ 4. **Compare Differences:** The differences are 5, 4, 8, and 6 for Monday, Tuesday, Wednesday, and Thursday respectively. 5. **Conclusion:** The greatest difference is $8$ on **Wednesday**. Therefore, the day with the greatest temperature difference is **Wednesday**.