Which two statements most accurately describe a tragic drama?

1. based on the downfall of the main character
2. based on mistaken identities that cause a lot of confusion
3. centered on the theme of marriage with intertwining plots
4. centered on a major flaw in the main character's personality
5. based on the dramatization of significant historical events

Which sentence is punctuated correctly?  a.under a microscope; the organisms look a bit like ruffled tennis balls they have armored plates that fit together to make a round shape. b.when the water is disturbed; the organisms respond by glowing this makes swimmers look like floating beams of blue light. c.there is a bay in puerto rico that seems to light up at night; the light comes from tiny organisms in the water. d.the luminescence attracts visitors from around the world people are curious to see; this beautiful otherworldly sight.