Graphs are used to illustrate or represent data.
Graphs are used in statistics to convey a message and to make it easier for the person that is viewing the graph to interpret the information. In contrast, just using numbers makes it difficult for a viewer to grasp statistics.
No that's not quite correct Grammar. It should be more along the lines of "He is very serious like that every time he's listening to music on YouTube. He is a certified music lover at a young age."
The correct answer would be A. I took this test
