I would say B surveys. Most Criminologist use survey research as a method tool.
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What exactly is the question here. I'm kind of confused. But will be happy to help you if you further elaborate. :]
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Answer:
D, Where there is a promise to do something in the future
I hope this helped at all.
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Mean for shop A because the data distribution is symmetric; median for shop B because the data distribution is not symmetric
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