Example of foreshadowing in dance hall of the dead, don't talk about what the book is, I want examples from the book

Agood persuasive essay topic cannot be a. a fact b. debatable c. something somebody else has already written about

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.

Plz i'm really bad with these and it would really mean a lot if you could ?