Please if there is any wrong answer correct it: A group of researchers want to d

Question

Please if there is any wrong answer correct it: A group of researchers want to determine if a new supplement is truly effective in improving energy and alertness. A sample of participants are randomly assigned to either the treatment group which receives this supplement, or the control group which receives a placebo. Measures of health along the lines of increased alertness are carefully identified and measured. Neither the participants, nor the attending researchers or physicians analyzing the results know to which group they belong. How would you classify this study? Observational Study All of the choices are correct Randomized Controlled Experiment Prospective Study Retrospective Study

Explanation / Answer

all are correct ; nly 1% doubt in 1st question where it can be randomized controlled experiment ; but prospective study option is always correct ; therefore u may submit.

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