To determine which interval will have the highest bar on the histogram, we need to compare the frequencies for each screen time interval provided in the table:
- 0-4: 6
- 5-9: 10
- 10-14: 9
- 15-19: 12
- 20+: 9
From this data, the highest frequency is for the interval 15-19, which has a frequency of 12. Therefore, the interval with the highest bar on the histogram will be 15-19.