What is it called when you write the same thing twice but worred differently?

Which of the following best explains why the author chose the compare-and-contrast structure for paragraph 2

In 2–3 complete sentences, thoroughly explain the protagonist's main motivation or goal in "the rules of the game"? what does the protagonist want? provide at least two specific details from the text to support your analysis of the protagonist's motivation or goal.

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.