Which scenarios describe data collected in a biased way? Select all that apply.

A is biased because interviewing only the 25 highest-scoring students leaves out students with other reading-test results. D is biased because adults at a fitness center may exercise more often than adults in general, so they are not representative of all adults. E is biased because people at a dog park may be more likely to prefer dogs. B and C use random selection, giving each number or student a chance to be chosen.

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