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The placenta is attached to the fetus by the
Haphazard Sampling
A non-systematic sampling method where items or individuals are selected randomly in an unplanned way, without any specific pattern.
Simple Random
A sampling method in which every member of a population has an equal chance of being selected for the sample.
Survey Questionnaires
A research instrument consisting of a series of questions designed to gather information from respondents for data collection purposes.
Quota Sampling
A non-random sampling technique where individuals are selected based on specific traits or characteristics to ensure representation of these traits in the sample.
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