Discussion
Identify the random sampling method among the following :
Answer: D
Stratified sampling is a random (probability) method: the population is divided into strata and a random sample is drawn from each, so every unit has a known chance of selection. Judgement sampling relies on the researcher's choice of typical units, quota sampling fills fixed numbers from groups without random selection, and convenience sampling takes whatever units are easy to reach. These three are non-probability methods, so the answer is stratified sampling.
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