An election will be held next week and, by polling a sample of the voting population, we are trying to predict whether the Republican or Democratic candidate will prevail. Which of the following methods of selection is likely to yield a representative sample?
(a) Poll all people of voting age attending a college basketball game.
(b) Poll all people of voting age leaving a fancy midtown restaurant.
(c) Obtain a copy of the voter registration list, randomly choose 100 names, and question them.
(d) Use the results of a television call-in poll, in which the station asked its listeners to call in and name their choice.
(e) Choose names from the telephone directory and call these people.