Final answer:
A line chart is used to show changes over time.
Step-by-step explanation:
To show changes over time, you would use a Line chart. Line graphs use one or more lines to represent how data has changed over a period of time. They are commonly used to show trends and patterns over time. For example, you can use a line graph to show how the temperature changes throughout the day, or how the stock prices fluctuate over a month.