Which sentence is in passive voice? A. By 1700, scientists had identified only twelve of the more than one hundred
elements.
B. By 1700, only twelve of the more than one hundred elements had been
identified by scientists.

B.  By 1700, only twelve of the more than one hundred elements had been

identified by scientists.

Explanation:

It’s B

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.

what is margin again? i’m confusion