Which is a dependent clause?

during intermission, while we were discussing the performance
dodging frantically, a valet ran through the crowd and into the theater
dashing after him, two police officers plowed through the lobby crowd
discussing the commotion, we decided it was more exciting than the play

What does tolstoy set up gerasim to be foil to praskoyva fedornovna

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.

Which should be added after the sentence 6 to most effectively move a the plot forward