Which statement best describes how the author orders the ideas in this passage?

A.
The author begins with a single idea and then moves through a list of others.
B.
Ideas are listed in their order of importance, with the less important ideas supporting the more important ones.
C.
The author simply discusses his ideas as they seem appropriate, with no particular order.
D.
Ideas are listed first to last in a chronological order, beginning with the one that occurred first.