The answer is <u>"The experiment is missing a control group."</u>
Control group, the standard to which examinations are made in an experiment. Numerous experiments are intended to incorporate a control gathering and at least one trial gatherings; truth be told, a few researchers hold the term analyze for contemplate outlines that incorporate a control gathering. In a perfect world, the control gathering and the exploratory gatherings are indistinguishable inside and out with the exception of that the test bunches are subjected to medicines or interventions accepted to affect the result of intrigue while the control amass isn't.
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The answer is A - concurrent.
The power is concurrent power.
In the Federalist Papers, Hamilton, Jay and Madison argued that the decentralization of power that existed under the Articles of Confederation prevented the new nation from becoming strong enough to compete on the world stage, or to quell internal insurrections such as Shays’s Rebellion. In addition to laying out the many ways in which they believed the Articles of Confederation didn’t work, Hamilton, Jay and Madison used the Federalist essays to explain key provisions of the proposed Constitution, as well as the nature of the republican form of government.
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