Provide a example of when graphing could be useful

If you want to know how many people every year from 1900 - 2000 were born with the name "Sarah" for example. Huh idk where that came from lol

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.