The purpose of control group 2 is to determine if the new drug was a possible method for getting well, i.e., option B.
<h3>What is way of testing medicines?</h3>
In a laboratory, drugs are first subjected to non-human tests. These laboratory tests are performed to determine a level of safety.
The results of these tests are then submitted to the United States Food and Drug Administration (FDA), which determines whether the treatment is safe enough to be studied in human volunteers.
There are various phases involving discovery, clinical trial, review, and safety monitoring.
The purpose of control group 2 is to determine if the new drug was a possible method for getting well
Thus, the correct option is B.
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<span>A. Natural selection
Able to find more food means more likely to survive - survival of the fittest i.e. natural selection.</span>
<em>a </em><em>blastocyst </em><em>comprises </em><em>of </em><em>about </em><em>200</em><em> </em><em>-</em><em> </em><em>300</em><em> </em><em>cells</em><em> </em><em>following </em><em>rapid </em><em>cleavage. </em>
