Pen-pals: write letters to an important person from history or the characters in a story that you have learnt in English.(Formal or informal)

Formal

Explanation:

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.

d. it compares the speaker reflection to a predatory bird that haunts the speaker