Final answer:
The type of chart used to visualize trends over time is called a Line graph, which uses lines to depict changes in data points.
Step-by-step explanation:
A type of chart used to visualize the trend of something over time is a Line graph. A line graph typically uses one or more lines to depict how data points have changed over time.
It is particularly useful for showing trends and is commonly used when you have continuous data that is to be displayed over a period of time, allowing you to see patterns, changes or trends more easily.