I need some help with this problem.

This picture is a graph.  Do you see the marks over on the left side ?  It says "Brightness".  The Low brightness is on the bottom, and the High brightness is on the top.  This shows you that the brightest stars are the highest ones on the graph.Now look on the graph.  Down near the bottom are Proxima Centauri and the white dwarfs.  Also, our Sun is not too far up.  Way up near the top, you see Supergiants.  "Betelgeuse" is on the right side, and "Spica" is on the left side.  Those are the brightest ones on the graph.The choices in your question are cut off below the bottom of thepicture.  But this much discussion should be enough to help you choose the best answer.