Density, mass, volume : is the amount of matter in a certain amount of space

What is the best definition for the underlined word based on the following senates many websites with him to lower users in by promising them free access to pirated music movies and television shows however this can lead to computer viruses are sometimes a large

Which statement most accurately describes the aesthetic impact of theexcerpt?

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.