What is one way to get a good sample for a mass survey?

Question

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Random digit dialing is a method of selecting a sample that involves obtaining telephone numbers at random and then contacting those individuals to participate in the survey. This method provides a more representative sample of the population as it ensures that all segments of the population have an equal chance of being included in the sample. Volunteered responses (A) and convenience sampling (D) can lead to bias in the sample as only those who are willing to participate or easily accessible are included. Push polls (C) are not a method of obtaining a representative sample as they are designed to manipulate or influence the responses of the participants.

What Is One Way to Get a Good Sample for a Mass