The organization of the ideas in "Literature and Art Abounds" supports the author's purpose by -

Responses

listing examples of writers and artists who shared their talents
listing examples of writers and artists who shared their talents

comparing and contrasting the popularity of writers and artists
comparing and contrasting the popularity of writers and artists

explaining the effects of the writers' and artists' works on society
explaining the effects of the writers' and artists' works on society

presenting the writers' and artists' works in order of importance
presenting the writers' and artists' works in order of importance

explaining the effects of the writers' and artists' works on society. By organizing the ideas in a way that highlights the impact of writers and artists on society, the author's purpose of emphasizing the importance of literature and art is effectively supported.