Which group was there no systematic program for their elimination ?
" The first group of participants was presented with a choice between programs:In a group of 600 people , Program A : " 200 people will be saved " Program B : " there is a one - third probability that 600 people will be saved , and a two - thirds probability that no people will be saved " 72 percent of participants preferred program A ( the remainder , 28 percent , opting for program B ) .