Systematic sampling doesn't require a frame. This method takes in every data from a sample, rather than restricting it by any particular means.
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Samplig frame is the source material from which the sample is drawn. If you have a 'list' of names of all inviduals from which you could draw a sample, the list is a sampling frame. A samplig unit is the sample being chosen.
Answer is Quota sampling. Its one of the method of non-probability sampling.
because it is the simplest sampling technique which requires less time and cost.
simple random sampling method
What is wrong is that the method has not been properly specified.