They are preserve a dead body so they're happy
Answer: This is a "CONTROLLED PLACEBO EXPERIMENT".
Explanation: A controlled placebo experiment is a type of research method that is used to check the effectiveness of a drug in a patient. This is done by selecting a sample group, then randomly divide the two group into a placebo group ( this are the group that will receive the drug treatment ) and the controlled group( these are the group that will receive a coloured mixture that looks like the drug, but does not have any effect). Without the groups knowledge about the real drugs and the coloured mixture, but are followed up and tested.
This is a controlled placebo experiment, because 400 student has been choosed as the sample, and are divided into a placebo group and a controlled group, to check the effectiveness of a drug on their memory.
The answer of the question presented above is letter C) <span>Karl, who helps carry out the group’s activities.
The choices are:
</span>A) Jim, who is informally regarded as the group’s leader
B) Gary, <span>who is always willing to express the group’s values
C) Karl, who helps carry out the group’s activities
D) Juan, who is a “member in good standing”</span>
True because JFK died November 22, 1963
Martin luther king died April4, 1968
