Which of the following is an example of a run-on sentence a. my computer hates me i really think it does b. if you have had computer problems, you understand c. it is not easy to learn everything about troubleshooting d. many people spend hours trying to fix computer problems

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.