Review the paragraph at the top of page 2. Click or tap the sentence that BEST explains
why scientists during the eighteenth century
were unable to explain how bats used
echolocation.

the answer is c bro ok

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.

his humble attitude made it easy for everyone to like him