Which word is a synonym of covert? HELP ME PLZ!!!

Plz change it i can not change this sentences .

2pointsread this passage: "don't worry about me," i said. "i'm not tired at all." oh no,i'm feeling dizzy. this is what they call passing out. don'tdo that. don't pass out. stay upright – stay awake.how does the difference between the character's spoken words and internalthoughts affect the story? oa. it establishes the setting.ob. it introduces a new character.c. it creates dramatic tension.d. it ties up loose ends.

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.