Welp, the kid appears to have pawned his work off on his friends, but who knows, if it's a multi-choice question I can't really help because you don't have the answers here.
The answer is:
The medicine bag is a symbol of the family’s heritage and American Indian roots.
A medicine bag is a small pouch worn under the clothes by Native Americans, which usually contain personal sacred elements that represent prosperity and ancestral identity.
In the excerpt from "The Medicine Bag," by Virginia Driving Hawk Sneve, Grandpa is weak and believes he is going to die soon, so he intends to continue the family tradition of passing the medicine bag to the eldest male child, Martin.
The overriding idea in any piece of fiction is known as it's plot
He's passionate and ridiculous.