The sentence begins with 'Through the years' (E), followed by 'rag-picking has acquired' (D), then 'the proportions of a fine art' (A), then 'and also been' (C), and ends with 'a means of survival for the poor' (B). Reading: 'Through the years, rag-picking has acquired the proportions of a fine art and also been a means of survival for the poor.' This matches option 4.