Ms. Johanssen likes to develop her lesson plans carefully and deviates from them as little as possible to ensure that all the material is covered. She insists that the class adhere to all the classrooms rules and that students maximize their learning time. Ms. Johanssen is using the approach to teaching.

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.