The most important idea in a text is the central idea.
Okey detail.
O main relationship.
signal word.

The most important idea in a text is the central idea.

Explanation:

tree and the cat in the tree

the symbol of the grandfather's heritage in this excerpt from "the medicine bag,” is the beaded bolo tie.

a bolo tie is a cord fastened around the neck with an ornamental clasp which is worn as a necktie. they have been used by native american tribes such as hopi, navajo, zuni, and puebloans since the mid-20th century.

therefore, the fact that the grandfather is wearing a bolo tie refers to his heritage as native american.