IN D, if all the brands availabe in Calovia use recycled materials, then the publication of the book would not help, because the publishing of the book is to help distinguish the brands containing recycled materials and brands not containing recycled materials. Therefore, D is wrong. IN B, because the manufacturers and distributors do nothing to advertise those brand's recycled contents,buys may not know that these products can be recycled and hence do not recycle them at all.Publishing of the book would help buyers know the recycled contents of these products and start recycling them. In E, only the propotions of recycled contents are different,people still recycle these products no matter what the propotions are. Therefore, B is better than E. |