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Which type of writing is best illustrated in a venn diagram? chronological order fact and opinion comparison and contrast cause and effect

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.

Read the following entries from the online etymology dictionary based on the information above, what does the world microcephaly most likely mean? a. dull or unintelligent b. worldly thinking c. having a large head d. bigger than usual