Question

it is best to use a graph, instead of using a chart or a table, to represent data when one needs to
change data.
organize data.
compare data.
view trends in data.
mark this and return
calories burned during activity
calories burned during various exercises

Explanation:

Graphs are visual tools. They can show relationships and trends in data more intuitively than tables or charts. For example, in a bar - graph like the one shown (Calories Burned During Activity), it's easy to compare the calorie - burning amounts for different activities (e.g., aerobics, basketball) at a glance. Trends such as which activity burns more calories for a particular weight group (e.g., 200 lbs vs 160 lbs) can be quickly identified.

Answer:

view trends in data.