Based on Survey Data,the Literary Digest Erroneously Predicted That Alf

Multiple Choice

Based on survey data,the Literary Digest erroneously predicted that Alf Landon would beat Franklin D.Roosevelt in the upcoming presidential election.What cardinal rule of survey methods did the Literary Digest violate? Make sure

A) respondents understand the survey.
B) you have sampled randomly from the population.
C) respondents are given more than one response option.
D) responses are made anonymously.
E) the survey questions are straightforward.