Well from what I know they did use obsidian, they did live in large numbers and did take shelter in the highlands. Hope this helps
original source A direct source of information or research
Primary source. In the study of history as an academic discipline, a Primary Source (also called an original source or evidence) is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study. It serves as an original source of information about the topic.
so funny im learning that to and in Middlesex County, Province of Massachusetts Bay, within the towns of Lexington, Concord im pretty sure.
Answer:
Uhm where are the choices??
I believe the answers is d