In which of the following nonrandom sampling techniques does the researcher ask the research participants to identify other potential research participants?

Snowball

1. Convenience Sampling (2): Selecting participants based on ease of access (e.g., students in a university cafeteria).
2. Purposive Sampling (3): Selecting participants based on specific characteristics or criteria relevant to the study.
3. Quota Sampling (4): Ensuring that certain predetermined proportions of subgroups (e.g., gender, age) are included in the sample.

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