Hello there!
Answer: Point D
The reason why "Point D" would be the correct answer because the point is no where near the "trend" of the scatter plot.
When you look at the scatter plot, you would notice that there following a "trend" when the graph increases.
However, you would notice that point D is not really near there, therefore making it an outlier.
An outlier is pretty much something that is left out, and in this case, point D would be the outlier since it's left out of the typical growth of the scatter plot.
I hope this helps!
Best regards,
MasterInvestor