Biology, 21.02.2020 01:58, hugbug5063

Before experimental drugs can be brought to market, they must undergo many rigorous trials to ensure they deliver their medical benefits effectively and safely. One method commonly used in this process is to compare the effect of a drug with that of a placebo in double-blind tests. A) Neither the researchers nor the study participants know who is receiving the drug and who is receiving the placebo. In controlled experiments:B) one variable is manipulated while others are held constant. C) none of these

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Before experimental drugs can be brought to market, they must undergo many rigorous trials to ensure...