What was the purpose of colored badges or triangles on camp uniforms? Identifying different barracks
Identifying work crews
Identifying the offense, from religion to homosexuality
Allowing the guards to recognize individual prisoners
Labeling individuals for extermination

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.