Bart wanted to know how often freshman boys at his school drank alcohol, but he couldn't survey every one of them. Bart decided that in order to give all freshman boys an equal chance of being selected to participate in his mini-study, he would visit the dorms at dinnertime and ask them to choose numbers out of a hat. The ones with the number 5 were given a quick three-question survey. Bart is demonstrating
A. equal opportunity sampling.
B. simple random sampling.
C. nonprobability sampling.
D. snowball sampling.
E. biased sampling.
Answer: B
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