Which statement best explains the main role of the flashback in this passage?

The flashback allows the author to show that the Montgolfiers' accomplishments were built upon the work of other scientists.

The flashback allows the author to focus less on the historic balloon flight and more on the Montgolfier brothers themselves.

The flashback allows the author to describe the Montgolfiers' historic balloon flight and the context for what led to that event.

The flashback allows the author to reveal that the Montgolfiers and other scientists worked simultaneously on the same goals.