Which of the following is not made up of an atom

Review paragraphs 12-15 of the short story, where della goes to get her hair cut at madame sofronie’s. use this “unseen scene” as an inspiration to write your own scene in which you imagine what the two characters might be doing and saying as the haircutting progresses. or you may want to imagine the scene in which jim sells his watch to buy the combs for della.

What would be the mass of an atom with 8 protons and 8 neutrons? a) 16 amu b) 8 amu c) 64 amu

Can someone tell me what these symbols mean or what does it say