______ sampling is useful for hard-to-reach populations for which there is no sampling frame, but in which the members are somewhat interconnection (at least some members of the population know each other such as drug dealers, sex workers, and so on).

Question

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Snowball sampling is the most appropriate choice for hard-to-reach populations with no sampling frame, where the members are somewhat interconnected. This method relies on initial contacts to refer or nominate other eligible individuals to participate in the study. This can be especially useful for studying marginalized or stigmatized populations. Simple random, stratified random, and purposive sampling methods may not be effective for such populations.

______ Sampling Is Useful for Hard-To-Reach Populations for Which There