The amended telemarketing and consumer fraud abuse protection act of 1994 states: a consumer [can] stop calls from all companies within the ftc's jurisdiction by placing his or her telephone number on a central "do-not-call" except when the consumer has an "established business relationship" with the seller on whose behalf the call is made. an economic aspect of the federal trade commission's "do-not-call" registry is that it a) reduces the amount of junk mail received by consumers. b) permits telemarketing calls to new clients on the registry. c) restricts all telemarketing calls to consumers on the registry list. d) allows consumers to engage in voluntary transactions with businesses.