Survey Results Are Considered Reliable, Subject to an Identified Sampling

Survey results are considered reliable, subject to an identified sampling error,

A) if 25 percent or more of the overall group members are surveyed.
B) if 75 percent or more of the surveyed group members provide the same answers.
C) if a representative sample of the target population is surveyed (the larger the sample, the smaller the identified sampling error) .
D) only if the entire target population has been surveyed.