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.
Is that the question or is there a sentence that is supposed to go along with it?
I think the answer is
False
Memoir
NOUNa historical account or biography written from personal knowledge or special sources
You can cross out A
Hope this helped a bit
They made<span> temporary camps along the coast. They often traded</span>