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(A) Since for most people it is difficult to see images as information and some ads are just too appealing,there has to be restrictions to make ads work.
(B) Scientists insist that aggressive ads are too violent and must not be shown to children before they at least enter elementary school.
(C) Unless we purposefully isolate ourselves from the industrial world, we have difficulty avoiding these images that daily insist upon our attention.
(D) In some rural areas or small towns, people are not influenced as much as those in big cities; thus, ads must be more aggressive to sell.