which of the following is the most biased type of sample? systematic sample convenience sample random sample

which of the following is the most biased type of sample? systematic sample convenience sample random sample
Answer
Brief Explanations:
A convenience sample is based on ease of access, which can lead to non - representative selection. A systematic sample has a set pattern and a random sample gives each element an equal chance, both being less biased than convenience sampling.
Answer:
B. convenience sample