The term extrinsic motivation refers to reasons to act that A. arise from the character’s beliefs or emotions.
B. originate in the character’s outside environment.
C. are inherent in the character’s psychological makeup.
D. come from characters’ desire to act on their environment.

arise from the characters beliefs or emotions.

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.