Please answer this: Two groups of students made some experiments for school. Group A used brewer's yeast on flower and tried to make bread. and Group B brewed beer with brewer's yeast, then baked bread with baker's yeast. Which group caused the bread to rise more?
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Answer: Group B

Please answer this: Lawmakers were debating the pros and cons of Keystone XL Pipeline. One group of lawmakers proposed that the pipeline be constructed. They put their proposal in proposal A. The rival group of lawmakers proposed that the pipeline should not be build. They put their proposal in proposal B. Lawmakers would now have to choose one of the proposals. Which proposal might not contaminate the aquifer, proposal A or proposal B?
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Answer: proposal B

Please answer this: Dana and Sean both checked in as hepatitis B suspects, but only Sean had Hepatitis B. Dana was healthy and didn't carry the virus. Which patient had a disease which can be passed through sexual activity?
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Answer:
Sean