Answer
The age category 25 to 29 years old shows the highest percent of prison inmates.
Work Step by Step
The horizontal axis (x-axis) represents the ages.
Notice that the highest bar is the fourth bar from the left.
This bar's height represents 17.2 percent.
The age category that corresponds to this bar is 25 to 29 years.
Thus, the age category with the highest percent of prison inmates is 25 to 29 years old.
