Final answer:
Adrian should use a bar graph to represent the percentage of time he spends on after-school activities.
Step-by-step explanation:
Adrian should use a bar graph to represent the percentage of time he spends on after-school activities. A bar graph is ideal for comparing different categories or groups, such as the different activities Adrian participates in. Each activity can be represented by a separate bar, and the height of each bar will correspond to the percentage of time spent on that activity.
Learn more about choosing a graph type for data representation