What is a benefit of providing commentary on outside sources in a piece of writing?

The unique structure of the opening lines of bart edelman’s poem “they shot wook kim” is meant to convey what main idea? select all that apply.

Read this excerpt from leah missbach day's foreword to wheels of change.bicycles have long played a role in my life. as a young woman, i rode one year-round before i had a car. but it was later in adulthood that the bicycle became more than a source of transportation for me. the bicycle actually began to truly shape the way i saw the world.what is the author's purpose for including this in the foreword?

Besides the skull and cross bones what other shape sometimes appeared on flags flown by pirates?