Low Response Rates That Result When Respondents Fail to Return

Multiple Choice

Low response rates that result when respondents fail to return a completed mail survey are a major factor leading to response rate bias.These low response rates pose a potential problem because

A) a carefully selected convenience sample becomes a probability sample.
B) segments of the population may be overrepresented or underrepresented in the final sample.
C) only surveys with a 100% response rate can be interpreted.
D) the sample size becomes smaller than the researcher intended.