Read these sentences from paragraph 4.


The plan which I adopted, and the one by which I was most successful, was that of making friends of all the little white boys whom I met in the street. As many of these as I could, I converted into teachers. With their kindly aid, obtained at different times and in different places, I finally succeeded in learning to read.


How are the ideas organized in the sentences?



A. problem and solution


b.chronological order


c.description


d.cause and effect