Obsidian was valued in the Stone Age cultures because, it could be fractured to produce sharp blades or arrowheads. Like glass, obsidian breaks with a characteristic conchoidal fracture. It was also polished to create early mirrors.
I wanted the new gucci bag and my mom said next month and im an impatient girl
The answer is live on the road
Personally I would do: C and D.
They both give you a little information of what info will be covered in the book. If they have a lot of info of what you want to write about then they are keepers and if there is only a little info then you can still use them but if there isn't enough info to help you write a in-depth paper then ditch it or them and keep looking.
Hopefully this helped and good luck.
