Which of the following is an example of probability sampling?a.Convenience samplingb.Snowball samplingc.Cluster samplingd.Quota sampling

To determine which of the options is an example of probability sampling, we need to understand what probability sampling is. Probability sampling is a method of sampling where each member of the population has an equal chance of being selected for the sample.

a. Convenience sampling: This is not an example of probability sampling. Convenience sampling involves selecting individuals who are readily available or convenient to the researcher. This method does not ensure that each member of the population has an equal chance of being selected.

b. Snowball sampling: This is also not an example of probability sampling. Snowball sampling involves selecting initial participants and then asking them to refer other potential participants. This method relies on referrals and does not ensure equal representation of the population.

c. Cluster sampling: This is an example of probability sampling. Cluster sampling involves dividing the population into clusters or groups and then randomly selecting clusters to be included in the sample. This method ensures that each cluster has an equal chance of being selected, and therefore, each member of the population has an equal chance of being included in the sample.

d. Quota sampling: This is not an example of probability sampling. Quota sampling involves selecting individuals based on pre-determined quotas or characteristics. This method does not ensure equal representation of the population as the selection is based on specific criteria rather than random selection.

Therefore, the correct answer is c. Cluster sampling.